The Slug Milax gracilis in Co. DublinAuthor(s): A. W. StelfoxSource: The Irish Naturalists' Journal, Vol. 6, No. 9 (May, 1937), p. 228Published by: Irish Naturalists' Journal Ltd.Stable URL: http://www.jstor.org/stable/25532713 .

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228 The Irish Naturalists' Journal. [Vol. VL

doubt accounted for the larger numbers seen on these three dates. There was snow on the ground on 1st March.

Roche's Hotel, Glengarriff. J. E. FLYNN.

THE SLUG MIL AX GRACILIS IN CO. DUBLIN. Ever since Mr. R. A. Phillips in 1928 drew my attention to the

presence of this slug in Ireland* I have expectantly looked for it in

my garden and many a dozen specimens of small Milax sowerbyi have

I picked up and carefully examined ; but not until the 26th December,

1936, did I come across a specimen of M. gracilis. On this date on

going into the garden after breakfast a single small Milax which was

rather late in retiring for the day attracted my attention. Closer

inspection suggested that it might be M. gracilis, which assumption was proved correct by its tripartite parti-coloured footsole, blackish in

the centre and whitish along the sides. In Mr. Phillips' paper this

species was recorded from gardens in mid and east Cork, Clare and

Kilkenny, the last being the nearest to Dublin, where no doubt it awaits discovery in many of the older gardens.

A. W. STELFOX. 14 Clareville Road, Rathmines, Dublin. 5-1-37. *See Journal of Conchology, vol. 19, p. 65, 1930: "Discovery of

Milax gracilis (Leydig) in Ireland," by R. A. Phillips, M.R.I.A.

NUDIBRANCH NEW TO IRELAND. In Proc. Malacological Soc, vol. 22, pp. 734 (1936), Miss Nora Fisher

records three specimens of Facelina elegans (A. & H.) from Green

island, Co. Antrim, shore of Belfast Lough. No examples of this

species have been recorded save the original type-specimen, which was dredged oft Berry Head, Tor Bay, South Devon, and described

in 1845.

NOTES ON, AND ADDITIONAL RECORDS FOR, SOME IRISH HALIPLIDAE (AQUATIC COLEOPTERA), WITH

SPECIAL REFERENCE TO LOUGH DERG.

By The Rev. E. J. Pearce, M.A., F.E.E.S.

Lough Derg, which covers an area of something like fifty square miles, a very considerable expanse of water, does not seem

to have received much attention at the hands of naturalists, and in particular, entomologists. At least two species (the plant Inula salicina L., and the wTater-bug Sigara (Selecorixa) pearcci

Walt. (5)*) are so far known only from its environs, as well as what appears to be a pale local racial form of the water-beetle Ilaliplus obliquus F. If the scanty attention that has so far been given to the biological study of the lough has already pro duced these interesting discoveries, there is surely reason for thinking that it would amply repay a closer and more extensive study. These few notes are put on record in the hope that they

may lead to a more extensive study of the insect-fauna of this interesting locality being taken up in the future, particularly if, as I am given to understand, development of the Shannon power scheme may cause some alteration in its present condition.

The Crustacea of the plankton have already received full treatment in an exhaustive and valuable paper (4) in which full

* Numbers refer to the list of references at the end of this paper,

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