1909. Notes. 205 



Vertigo moulinsiana in Queen's County. 



While botanizing near Durrow, Queen's Co., in May last I discovered 



this interesting little niollusk in a swamp by the Erkina river. A few of 



the specimens seen were adult, the remainder, and more riumerous, 



being onh' about half-grown. This species apparently spends its 



juvenile state during the early summer months feeding low down among 



the marsh debris. T.ater on, towards the autumn, when fully grown, the 



animals ascend the grasses, reeds, and other plants, and finally hibernate 



on the stems and withering leaves that during the winter months stand 



stiff and well out of reach of the stagnant waters of the marsh. In 



October, 1908, I saw at Tinnahinch, Co. Carlow, its only other known 



Irish station, over fifty fully-grown individuals on a single leaf of the 



Hemp- Agrimony. 



R. A. PHiiyr.TPS. 

 Cork. 



Limnsea involuta in Co. Cork. 



This very rare little water-snail, hitherto known to exist only in 

 Crincaum Lake, near Killarney, was found by me in August last in Barley 

 Lake, a mountain tarn in West Cork. The specimens, which have been 

 verified by several authorities, differ from the Killarney ones in being 

 rather smaller and slightly narrower in outline ; in the intorted spire and 

 texture of the shell they are indentical. 



R. .\. PHii^rjPS. 



Cork. 



Helix hortensis in Co. Down. 



A third north-eastern locality must be recorded for this land-shell, 

 Mr. J. N. INIilne having found it living on Maliee Island, vStrangford 

 Lough. To make certain that it was this species and not one of the 

 small white-lipped forms of //. iieinoraiis, so common on the west 

 Donegal coast (and which turn up occasionally in inland localities), we 

 had the animal dis.sected by the Rev. W. W. Bowell, who reports that it 

 is undoubtedly H. hortensis. Though fairly common in many places in 

 eastern and south-eastern Ireland, this is an excessively local and 

 usually rare species in L'lster ; four localities only^ being hitherto 

 known, including one each in Down and Antrim. 



R. WEivCir. 



Belfast. 



The Nudibranch Genus Lomanotus. 



In a recent paper {^Anu, Mag. Nat. Hist. (8). vol. ii., Aug., 1908, pp. 

 208-215;, X. Colgan gives an interesting summary of our knowledge of 

 this rare genus of nudibranchs, mentioning a number of Irish record.s, 

 and reducing the six species hitherto recognised to two, viz., [,. niarvio- 

 ratus, Alder and Hancock (with /.. Geuei,L. portlandicus 2i\\(\. /,. Hancocki as 

 synonyms) and Z. Eisigii. Trinchese. The former variable species ranges 

 from the Mediterranean to the vShetlands, while the latter is confined to 

 the Bay of Naples, 



^ See I.N., vol. xvi., p. 251, 1907. 



