$3.7s

PACIFIC SEA SHELLS

A HAI..IDBOOK OF COMMOh{ MARII{E MOLLUSCS

OF

HAWAII AT{D THE SOUTH SEAS

( Rrvrsnn EortroN )

By

SPENCER WILKIE TINKERDirector of the Aquu'riunt

( /niuersity oî Huwnii

cH.enlus E. Tutrr,n connr^lNY i Punr,rsrtEns--^'--illllaid, Vermont & Tokyo, Ja'pa'n

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$3.75

To My Parenls

Luke Tinker and Anna V. Overholser Tinker

Represettt atiues

corttirrertt ul llurope: BOXFIRBOOKS, INC-, zurich

Ilrrtislt Isles: PRITNTICI,I-HALL INTERNATIONAL, INC' , Londort

.,lttslrulrtsirr. I)A[JI- FLIìSCH & CO., PTY' I-TD', Melbou'rne

I,ultlisherl by thc Charles E. Tuttle Company

o.f Rulland, Vermont & TokYo, JaPanwith cclitorial fficcs at Suido I'chome'

2'6, BunhYo-ku, T'okYo' taPan'

CoPYright in JaPan, 1958by the Churles E. Tuttle ComPanY

All rigltts reserued

I.ibrary o-f congress catalog oard Ì'lo. 57" 13069

Iîirst edition, 1952Scttenth frinting, 1965

PREFACE

This volume was prepared to serve as a handbook for amateur shell

collectors who are interested in Pacific Ocean shells. It is written to

help and to encourage the student and the beginner in the identificationof the more common and larger central Pacific species.

This book is not a complete guide to all of the sea shells of theIracific Ccean. It is primarily a guide to the larger and more common

shells of the Hawaiian Islands and of the area lying to the south and to

the west of this group. Because nearly all of the Hawaiian species are

found over wide areas in the Pacific Ocean, it is hoped that this littlebook will prove to be very useful to amateur collectors in all of the areas

of the tropical Pacific Ocean.

The many minute species and the rare and uncommon species are notincluded within this volume because they are either difficult to obtain orto study and are therefore not often found in the collections of amateurs.

Of the five classes of molluscs, the snail-like iotrnt or gastropotls com-prise the major portion of this book because they ate the most interesting,ttre most numerous, and the most often found in shell collections.

The arrrngement of the families of shells in this book follows theCheck List and Bibliography ol the Recent Marine Molluscs of Japan byTokubei Kuroda and Tadashige Habe. The species listed follow in partan unpublished check list of Hawaiian molluscs prepared by E. H. Bryan,

Jr. of Honolulu.

The author is pleased to acknowledge the assistance and council of theindividuals who helped in the preparation of this book.

Dr. C, M. Burgess of Honolulu made his collection available for theproject and it is from this remarkable collection that most of the photo-graphs have been taken. The author owes a debt of gratitude to Dr.Burgess for his generosity and help in this project.

The author also wishes to express his appreciation to f)r. James W.Cherry, Mr.Wray Harris, Mr.Jens M. Ostergaard, Mr.Jarnes Pang,Mr. Ditlev Thaanum and Mr. Kenneth A. Wong all of Honolulu, Hawaii,for their help in the preparation of this book.

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SPEI{CER TII.JKER

THE AUGER SHELL FAMILY

Feurlv TnnrnRrDAE

The auger shells are very slender, elongated sea shells, many of which

have beautiful colors and color patterns. They are constructed of many

r'lat-sicled whorls which taper very gradually and evenly toward the

trrointed apex. The aperture of these shells contains a small notch in

front, the columella is without piaits, and the operculum is of a horny

texture.

The group is found in \ryarm waters of the temperate and tropical

seas where they burrow in the sand. The family is a large one contain-

ing about two hundred species.

Trle CnI:NULATED Auctin Srtnrr Terebra crenulata (Linnaeus)

This auger shell is marked by a turret at the sutures and by nodules

scatterecl in a row around the posterior part of the body whorl just

anterior to the suture. The shell is of a fleshy cream color and isdecoratecl by rows o f spots and wavy lines about the sutures. It willreach about fir'e inches in length.

This species extencls from the Hawaiian Islands southward throughout

l'olvnesia ancl across the entire Pacific and Indian Oceans.

,\ r'nrietl'of this species known as Terebra crenulata (Linnaeus) varietyhrtt'rlirr{ttld Deshayes differs from the typical species in having a smooth-

tìr 'heìl ancl in lacking the spiral row of coronations or knobs about the

:u t Ll r'cs,

i li,l

T'erebra subulata (Linn. )

J'his auger shell is of an unusually slender shape and has a verysmooth surface. I t is o f a yellowish flesh color and is marked rvit hsomewhat rectangular brownish spots. It wilt reach six inches in length.

'l'his sgrecies is clistributed from the Hawaiian lslands southwarclthroughout l'oiy'nesia and westwarcl across the Pacific Ocean tcl Japanand the I-,hilippine Islands, through the F-ast Indies, and across theInrlian Ocean to the l{ed Sea.

Center

Sr lnrr, 'l'cr('hrt rnaculat a (Linnaerrs )

conrposecl oI smooth shiningrvhite interior ancl is market ì

1>urplish black areas. It is

nleasure over eight inches inthe family and may

Left'l'H r, Awl-SrrApED or< Suru LAln Aucl:n SuErr

thicli, heavy shell

color rvith a nearly

1ra ttc'rn o f ttlack or

the l{arvaiiano f :\ustralia,

Islands southrvard through-ancl westlvarcl through the

I ndies.

Itisht'f crabro guttat a (Rijding )

'ì'lris augr.r sherll is a slender s1>ecics cif medium rveight n'ith sutureslviricl'r irr(..;.nì(.u,hiìt c'nstricted. It is orange-brorvn in color and isIìlarltt'ri u'ith I \\'o r()\\'s of white slrots uporì the bocìy whorl anrl lr-\' oncIo\\' tii)orì lhr cariir:r w'horls. It rvill reach five inches in length.

'l'ìris iirt't'ir'' t'sit'rrrls frrint tht' l-lawaiian Islanrls sor.rthn'arrl antl r,r'csl -

rt'artì iltt'rttgltoul ifitr tr()pical I'ar:ilìt: Ocean anrl through the islarrrls efthe Ir,;-t...l Irrrlics.

U pTter Rout, Le f t,

Tnr: I)nnx Sporr.rn AucuH Snnrr T.erchru aurcolota (Link)This auger shell is a beautiful, long, tapering species in which each

whorl is marked by three rows of dark chocolate spots. It varies inlength from three to six inches.

This species is distributed frorn the Hawaiian Islands southwardthroughout Polynesia ancl then rvestward across the trcrpical pacificocean to Japan and the l'}hilippine Islands.

U7t7tt,r' Row, Cen.ter

Tnc Anclrs Aucn:n Snr:rr T erebru ur gu s HindsT'he arf{us auger shell is a rather slenrler species rvith a fairll, smooth

surface, particularly at the an terior end. T'h^ shell is markecl at thepclsterior encl by longitudinal plications and by an encircling grooveplacetl arr terior to the sut ures ; bot h o f these markings becorne less pro-nouncetl ancl t end to disallpear towarcl the anterior encl. The shell iswhite in color and is usually markecl by very light, somewhat rectangular,yellorvish llrown spots rvhich form four spiral rows upon the bo6y whorland trvo uPon the rest t"rf the shell. It will reach a length of about fiveinches.

'I'his species is distribtrted from the l{awaiian Islancls southwardthrotrghrtu t -t)olynesia ancl possibly elsewhere in the I ndo-Iracific t,rca.

A variety of this species, it which the shell is shorter ancl the rvhorlsless olrlique, has treen described ancl named Tereltra urKus FIincls varietybrat hy glru Pilsbry.

(Jpper Row, RightTrln: DrvrDriD Aucnn Srrrlrr 7'rre hra dinúdiat u ( Linnaeus )

'['his slender auger shell is markecl by a spiral groove at the posteriorsicle of each whorl and by longituclinal ribs upon those whgrls whichare nearest to the apex of the spire. It is reddish orange in color anclis marked by streaks and bands of white. It will reach a length ofabout frve inches.

'I'his species is distributed f rom the Hawaiian Islands southwarclthroughout Polynesia and westwarr"l across the tropical Pacific Ocean tothe Iiast Inclies.

Middle Rou, LeftAucnn Srrnr,r, Terebra species

This auger shell is a medium sized species, rather stout in outline,

and of rather heavy construction. The entire surface is smooth and is

marked by an encircling spiral groove just anterior to the suture; this

groove becomes less pronounced toward the anterior end. It is whitish

or yellowish in color and measures about two inches in length.

This species is found in the Hawaiian Islands and possibly elsewhere

in the Pacific area. It is of puzzling identity and appears in various

collections under the name of Terebra candida ( Ilorn ) .

Midrlle Row, Right

TuE Yrrrow Aucnn Srrrrr. Terebra cltlorata L,attrarck

'fhis species is encircled by a faint groove anterior to the suture.

It is a smooth shell anteriorly, but becomes increasingly crenate torvard

the apex. It is white, yellow, or green in color and is markecl rvith

Iongitudinal brownish streaks ancl splashes. It will reach four inches

in length.

This auger shell is distributed from the Hawaiian Islands southwarul

and westward across the entire tropical Pacific Ocean, throuf{h the islancls

of the E,ast Indies, and across the Indian Ocean to the coast of Africa.

Lower Row, Left and Right

TrrB \\'rrrrr Sl,grrrir-r SHrirl 'l'er(bro trit.rttottt (Rilcling)

The eyed auger shell is a slender species in which the rvhorls are

somewhat constricted at their middle and show a tentlency towarrl t.ur-

reting. l'he shell is orange-brown in color and is marked by a row of

large white spots just anterior to the suture and by two rows o f largc

white spots upon the body whorl. It will reach a length of five inches^

This species is distributed frorn the Hawaiian Islancls southrvard ancl

Ìrescribe cl ancl namecl 'l'(r(:bru lonctuttt (Linnat:lts ) r'ariet.y rto ltutnsis

I'ils brv.

r89

,.. , ìS..t_.,{ir.d.,

l,r>it't-t''l'tt i. I-,rNCiìt),'\tjt-,t.t< Sirr..r.l.

'l irervhr'rl:sUtlli-l.'.r

i'Ll(1iìliì}.'r'ì.: .J Jil.\

l l-i i-, , trgh

tirr,;rr{h

Il.o1y, Ct'nÍet''l'trtbru lunct'ut rt ( l,iruìit(,l.ts i

lartcetl aust'r thcll is a smooth an(l shining SirrÌcit s in u'hicir theare some\\'hzll t runcatcrì an(l siightly srvolle n an[crior to tht

It is ,rf a glistr,:nirrg u'hite urJor an(l is nrarketl lr), \\'a\'\ ', j,,rrg i-t,bliclt-tt', irrott'n iirtcs. 1t nrcirsures about tn'o inclies in I1ngt1.

spt'cies is tiistribtrtcrì it'ortr the I-{au'aiiiin Islarrrls sr.ruthll'lrrill',rlvnesia an<l \\'estw'ariJ across the trcipical I'acific ()rtr;rr,

lhe isìantls <ti the F,asi Intlies. anrl ircìr(-)ss thc lnrlian ()ce;rn tr;rhr' ( )irsl ri .\frica.

\ :.tlt;lllcr forlli oi this sper ics fronr the i:iiantl rrf ( )zrhti |ra:i i;{:,,pii,',.' r-iJlr:rl anil nantetì 'l'(rt'/tru /ttttt't'r//rr [.innatus varict\. ,t,tlrrri,lrsis I'i]:;lrr"r

Upper Rotp; Seconcl Row, Cmter llairTHn Vent.trrr Aucnn Snnr,l ' Terebra inconstarw Hinds

Second Rou,, Right and LeftTnn I_,EaDEN Aucpn Suslr, T erebra Ttltnnbeu

Lr'rrr-r \).''JLL .I,erebra T,tlumbeu e,roy and Gaimarcl

Tl:.. leaden,, aug'er . *hgll js rnarked over its outer surface hv nìrr"!\/sttaigrrt, '*'*in:i:;;t;J[i;"i"rJìff:1" oÎr::ii,]:: "Ìt"i- *#ti'i,,]I'.

i:11{of & bluish lead-flii|{ ;|Îî. ",i, 1'f,f .ll,l:1lo*i:h,.o,ll;; i;';';i;,j'*,,,r ;- .ì,u*rîy ";,ilì.î-liili,'i,,?'i'i,1. t#-fi1:rlrl I _

rn r.ù;;*-' *or'rthlt,arti tc'f r.,r'l 'i .' .'--I ---^--a-, , ì ir r .r

of Asiu and the East llrclies.

T hirrl R out

ll' q:y'ebru. nitirÍu Flincls

ll ';,,1]?11)i,." jÌ :.f,..::i,i,j..-y3 31c| is marked, over t!* outer surface by

:::::;llr"*i;.:.Íi.i;it';!*1''e,',1:-i;,"iìi"d "': ;,1,f;*:'"'in 'lnlll-'g?31;i,,i";':tìnrerio| to tlre sutures. T'f * a.lrerture is nr,rro*,. The .rrÀil"i3";h;iirri'Vt)r)'li.qht'tan in color ancl u'iìl r*u.h ; jength in excess of one inch.Thi's species is distributecl frorn the Hawa iian Islanrls southwardth'ough I'oìynesia ancl probabiy àr."*r,éi:ò in tt,e pacific area"Th is sPecies is also known by the name of 'l'er.eltr.u Ttlicatelltr Deshayes"

I.,O?1,(l'l^ ROU;

Tere (tro pe osei l)c"shayes

.|,,'?:;,,ì ;i:H.i.,;'l.1oll,.l,,];s' ::_:,'l:,3tJl exter,ior". which . is nrarkerl by lonsiru_

I:j::'^,;oll:13::..|1,: ,:_::P," Ii, *iil ':;;;i,u,,",";r,:;;';lìij";;,1"";;i;;'; dl:$ff;i ?,i .l;:li:Y i::,îi::f",Il^:1":lll":; *i"*a';qy ;;;;-."p;i'F;;, "#i;ilitiÎ:î:l:l .,P';::::.li:l r::rrkingi, ,1,nii ar,out *"urv iiili*'oi f;;l;iJ' i,itil'-ili;s;utu'al bitnd is usually wnitish in col.r.

Islands southward andwaters to the Philippino

S'rne authorities'eger'd this molrusciìuger sheli, Ter,.,ltru, cri'rtt,t,llrttct euoy anrl

This species is eovered over the outer surface of the shell by & pattern'of longitudinal anguìar iias*r ór'pri.uùo"rl- It rràs a wide flaring &per*ture and lacks the-encirclin[ :.pii"i g';;;9 interior to the suture which isfound on maf Y of these s[elf.. Tfre .oio* -uf

,thip - species is extremelyvariable but is usuallv of " .Ào.qùil,;;È; or bluish iolor with & whiteband encircling the *útrru ; li- *i,1-.;..;ru i"ntunsity from lighú to dark.It nreasures a5out one and'on.-tutr i;;he;'i; rength,Th is auger shell is distributed from the Hawaiian Islands southv/ard

il:"b-*?"lfi?ji.'esia' across the unti'é-'i'àoi."i p*.in''o.*ur,, and rhroughThis is an extremelv- variable. species which -is somewhat difficult. toidentifv. It is found in book*-útioéi;'"lri*iv of n&mes.

This -:liecies is distributecl fror' the Hawaiianwestrvartl thrgugh ?lì of the warnr tropi.ui pacificIsl*nds anrl thr'óugh the Ea.st Incii.s.

a s a variety rtf the c*rncellaterJCìaimarcl.

I {}2

Upper Row, Right and, LeftTuEnNuM's Aucpn Sspr,r, Terebra thapnumi pilsbry

?haanuT.': a,ug€r shell is one of the srnaller Paciffc spegiea and is diffi-cult to identifv ìe-cause it só ;6i*iy il"di'àlilrrffi specíee deseribed asT^*:!y sswtdi Deshaves. Ír iu ;;{:;il;il:;il"d;;; liiaist r in ounÍne, andts covered over the outer surface qy many inrmt'tr; -io""situdÍnal

ribs, Itis encircled anterior to the suture. bv * froooe whích marke off a ratherwide presutural band; th-G il;d ir pqpróximately one-third of the widthof the whorl. rt, is a'light ."tor"a sriéjí ;f ; pù$is[- ùur finr upon whichare vague, indistinct, ana rco.1lpr defined oéaAilf,--U*** ,naffringg" Itreaches two inches in'length.' ihír rpeeiJs'occurs in Hawaifan \uaters.

Upper Row, Center pairGour"o's Aucrn SHur,r, f erebra gowîdi, Deshayes

Gould's auger shell is 'a.species of medium size in whÍch each whorl is'rnarked posteiiorly by " .tpiiài g*oru. Th* ,rrrorj*- u"* marked with closeset longitudinal ríbs bn the at,tE"lo" *ia* ói tr,u g"-oove and by low knobspostprior to the groove. - It is "i ; y-r1òirirriLrritr Eór,o" ., ,ltt th{i body whorlrnarked by thrd spiral u""au-;"4 *ru

-"à*ui"ing whorls, markàd-by twospiral chestnut bands. !t ù;;it*; " rg"En fi'abou? two-and one-half inqhes.This species occurs i" Hi*aiI a"a uT*à*uùre in the tiopical pacific area.This molluse closely resembles Ter;b;;"' ;i""numi pilsbry.

Middle RowTHn Pnrcxro oR puxcrungD Aucnn Sxnr,r, Terebrn pertuaa BornThe uunctured auge! shell is & slender species which is straight Ín out-line' It' is ;;;È;d ;;-fi+. $"F*ii"ri r"rà"r 3r,q.by- a-n. gneircrlng sroovesnterior to the suturés which ii"iaur tit;l;gitùainàr Hta, inro tfro parrsupon each rvhorl' There is ; t""ài; ;;;;i."nder, anterior part which isencircled bv rows ot'["n.t"i"r"u;a ; ;;;;-;ior- pgrt which has somewhatthe appearance of a rbw or ueaas. Th;;i; of this shell varies consider-ablv' lt ranges from *rt1p #iiùh tqi";;;;urrse, purpte and chocotare roblack' This

*color it-apptiéa ln-;brd-d- uré"r ovér fhe surf,aee, often with

'1rur:i?T#liir'*l f#[d;;í úd.;;lir'. ;"fi;-;" it *iir-,àacr, aThis snecies is distriuui*i from the Hawaiian trslands southward throughthe Pacific o;;; io" i"ttralia u'a .lr"*ii;;; in the tropicar pacific area.

Lower Rout, Right and LeftSp.u,ptNc's Aucun SHplr, Terebra apa,l,d,ingi pilsbry

Spaldin{'.t *tser shell -is a fairly robu.st. specÍes in ougine and is rnarkedover the entire oúter surrÀce *lfi'i*oóirtlàilLitpdfirilitr. It has an en-ci'rcling 8rq9v€ anterior t-o the .rùîur"

which-;;kg;tr ffi pres,tural band.It is whitish in color ald- ú- il;;àa *iiii fru;h .;l,or;d iiit* in the groovesand about the sutuial ù;;.-"Ji'---"a^eures about- on* ;ft one-harf - ínchesin length. This rp"ciàg oecurs in the Hawaiian Isrands.

THu Rnr,,lrnp Auonn suur,r, Louter centcr

Terebra yropinllua peaseThis auger shell Ís a slender specÍe-s -in which the whorls are crossedbv longituaTnallù.uilo"s

-and ;di;ird # J g"oo"* julr anrerior ro rhesuture' The stràlt is ppdói"i"à.diy ^bq";í ln -coror- dna' i, marked withwhite blotches and JCtJar.*. - ú;;'-or"ttr* ;iú;r, É;ev-pilcprions borderingthe suture &re rnarked ;it--*tìil:"It qrea;"d;bor.rt oire and one-harf inches.This species oc.uis in llaw;;i ;"1 urré*f*.* in the pacific &rea.

194

."..' r .* ,.,.rL{, ,#a;r',aid;

Upper Rmo, Right 6,nd, I.#ÍtTHs Ttcnn Spffireo Aucnn $nnr,r Terobra fetinu (Diltwyn)

This mollusc has a fairly firrn and heavy shell whÍch is emooth on theexterior except for an eneircling groove anterior to each suture. The shellvaries in eolor from white to flesh color and is marked sn each whorl byq single encircling row of brown spots posterior to eaeh suture and by &,

double row of spols upon the body whorl. It will reach & Iength of atroutthree inches.

This species is found f,rom Hawaii southward throughout Polynesia"

Upper Rous, Center PúùrTnn Cononu Aucnn Snpr,r," - Terebrs, fwndcwlata Hinds

- This qFger shell is a slender, turreted, screlv-shaped species msrked5ti * small aperture and by large, revolving, rounded -ribs, itre largest ofrvh ich is ne xt to the suture. It is of a, tan or brownish color and willreach a" length of about two inches.

Thrs species is found from Hawaii southward throughout Polynesia.

Midàle Raw, Right und LeftTrrn Slrnnw Cor,onnn AUGER Snnr,l Terebra starninea Gray

This slender, turreted species is encircled by two beady bands anteriorto thc suture of which the posterior band is by far the larger. The re-mainder of each whorl is crossed by fine rernolving lines and by longitu-$inaj gr_owth lines. It is straw cólored or orange with white suluralbands. It will reach a length of two and one-half -inehes.

This species is distributed from the Hawaíian Islands southward andwestward across the tropical Pacific to the Philippines and the coast of Asia.

Middle Row, CenterTHn Ba,syt oNIAN Aucnn SHnu, Terebra babylonia Larnarcic

'I'fre Babylonip+ _ auger shell is often shown &s & vdriety of T erebra

.*frrmtz,it',r Gray which it closely resembles. It may not be a sefarate speciesalthotigfr l! seerns to differ fiom T. sta,minea in" being largei, longe{ }esiturtei.'d, lighter in c_olo1 an{ with the beady suturalland-leés próminent.It will reach a length of at least two and oire-half inches,- f;h is species is disu,ributed from the Hawaiian I slancls southward

I hrougir Polynesia and thence aelìoss the tropical Facific to the .o"ii oî Auia.

Lower Row, Right artd LeftTHr: FnoRr-Wnontrn AucEB SHpr,r, Terebra, a,rgue Hind s y. breeh,ygyra P.

This rnollusa is a smaller varfety of Te,rebra &rg?Ls HÍnds Ín whichthe slrell is shorter, tlte whorls are léss oblique, and the color pattàrn lessdistinci. It is from the Hawaiian Islands.

Lawer Row, Center Pair'IHE Vnnnnaux's Aucnn SHnr,l Haatu[n aerresilni (Deshaye$)

& beautiful, slender, polished species which isridges which in some speeimens become fainterligh! yellow in colorand is marked by a whiteto the suture and also by a spiral series of verysp*ots which become srnaller, farther apart, anàIt will reach a length of about one and three-

from Hawaii southward thrurughout l'clynesirr.

This augpr shell isnrarked by -longitudinalanteriorly. Thè shell isspiral band just anteriordark brown or purplishfainter toward the apex.fourths inches.

'This mollusc is found

196

Upper Row, Center Pair

THr PrNcrrLED Aucnn Snrr.r, Terebra penicillata Hinds

The pencilled auger shell is a beautiful smooth species which is

marked by a variable pattern of longitudinal wavy brown lines which are

wider behind the sutures and which may even touch or merge with ad-joining lines to form an irregular band around the upper or middle part

of the whorl. It will reach a length of about two inches.

J'his species is distributed from the Hawaiian Islands southward and

westward across the entire tropical Pacific and Indian Oceans.

UpTter R,ow, Right and, LeftTnn Nr;nuLAR Aucrn Surlr Terebra nodulari,s Deshayes

J'h is auger shell is one of the smaller species of confusing and un-

certain iclentity; it is regarded by some as a synonym of Terebra textilisHinrls. I t is apparently a variable species, slender in outline, withstraight sides, and marked upon the surface by two encircling bands oflongit uclinal striae. lt is yellowish white to tan in color. It ranges

frorn one to one ancl one-half inches in length.

'l*his species is clistributed from the Hawaiian Islands southward and

westward to Japan and the islands of the East Indies.

,fI{R cunvnn Aucpn rff::' *'*;iiu"ril,ili"^';ease

variety artaDan

J'his small species is covered over the outside by smooth, rounded,

longitudina.l ribs or plications. It is of a very light tan color and is

marked with two darker encircling bancìs. It is about one inch in length.

This variety is found in the Hawaiian Islands.

Second Row, Center PuirTerebra species

Ttris little auger shell is an uncletermined species from the Harvaiianlslanri'. It is a slencler, highly polished species ancl is marked longitudi-nallr' lrv angular ridges and angular r{rooves. A constriction encircles each

whr.rrl alruut one- fourth of the distance from the posterior end. It is

dir rk brt-rrvn to trlackish in color and measures about one-half inch inlengt h

'l'his spccies occurs in the Hawaiian Islands ancl possibly elsewhere

in thr: l'acitrc area.

due to a large protoconch. The shell is pale yellow ir col,or

marked anterior to each suture by a white area and by a spiral

Tluùrd Row, Left PaírAucnh, Sr*rr.r,

This' species is longitudinally'whorl and smooth on the anterior

grooved on the posterior halfhalf. The end of the spire is

Terebra species

of each

roundedand is

row of

I f)r{

light brown spots. It will reach a length of about three-fourths of aninch.

The auger shell figured here is an undetermined species from theHawaiian Islands and possibly elsewhere in the Pacifrc area.

Third Row, Right PairTnn Wnrtr Aucnn Srrnr.r" Terebra albula Menke

The white euger shell is a small species marked by longitudinal plica-tions or folds which do not extend entirely across the whorls. Thesefolds are best developed at the posterior side of the whorl and become

less distinct and even disappear anteriorly. Toward the posterior side

of each whorl these folds develop into small knobs so as to give thesuture a knobby or coronated aspect, It is whitish in color and is

banded with tan or orenge-brown.

This mollusc is distributued from the Hawaiian Islands southwardto Australia and westward across the tropical Pacific Ocean to thePhilippine Islands and the East Indies.

Some individuals regard this species rr^s a Pacific variety of the WestIndian form known as Terebra hastata Gmelin.

Lowcr Row, Center Pair

Aucnn Srrnrr, Terebra species

This little auger shell is an undetermined species somewhat resem-

bling Terebra plicatelln, but differing in its color and in its more highlypolished surface. It is marked by somewhat angular longitudinal ridges

and by longitudinal grooves each of which bears a pit placed forward ofthe suture about one-third of the rvidth of the whorl. It is orange-brown

in cdlor with a" lighter area along the sutures, It measures about tltree-fourths of an inch in length.

This species occurs in the Hawaiian Islands and probably elsewhere

in the Pacific area.

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..*,*".'*j,#, ,W$i

Lower RouL, Rigllt and Left

T"HE ll-aslrnn Aucnn Snnrr Terebra lauta Pease

This auger shell is a rather small and uncommon species which ismarkecl about the whorls by sharp-edged, longitudinal folds. It is ofvarious colors but it is usually an orange brown color at the apex anclbecomes a lead gra-y color anteriorly. The shell is encircled towardthe an terior end b-v a. row o f dark brownish spots placed jlst anterior tothe sutures; the anterior end of the shell is tipped by the same brownishcr:lcr. I t is aboul one inch in length.

This species was clescribed from the Hawaiian Islands and probablyoccu rs er lservhere in the tr'acifìc area.

200