Freshwater Mollusca of Ireland. 



2<) 



and at the inland localities of La Bergerie, near Portarlington and 

 Ballitore (county Kildare). H. virgata is one of the species which 

 seems to follow no rule in the choice of its abode or in that of its 

 associates, or rather whose absence from or presence in particular 

 districts cannot be accounted for ; it will be abundant on sea-banks 

 at one place, and for a hundred miles again will not appear in similar 

 localities. Some authors have remarked, from their own accurate 

 observation in particular localities, that it is never found with H. eri- 

 cetorum ; and Mr. W. H. Harvey, in supplying me with notes of four 

 inland and marine stations in which he had observed it, remarked, 

 " I have noticed that this species is never found mixed with H. eri- 

 cetorum, nor is it generally in the same neighbourhood;" yet not 

 very far distant from one of those alluded to, both species are found 

 in company*, and on the same plant. 



In the collection of T. W. Warren, Esq. of Dublin, is a very fine 

 series from one locality, Portmarnockf, presenting every variety of 

 colour and bands that I have seen described, from the hyaline and 

 opake white to the darkest brown. H. ericetorum has in similar va- 

 riety been procured by this excellent and indefatigable collector at 

 the same place, and H. Pisana, likewise differing, he possesses from 

 its not far distant station : — one of the most beautiful of these three 

 species is opake white with hyaline bands. At La Bergerie, near 

 Portarlington, Mrs. Patterson of Belfast obtained a specimen of H. 

 virgata, which both in form and colour bears a rude resemblance to 

 the Helix elegans of Brown. 



18. Helix caperata, Mont. p. 430. t. 11. f. 11 ; Gray, Man. p. 162. 

 pi. 4. f. 32. 

 H. striata, Drap. p. 106. pi. 6. f. 18—21. 



In Brown's " Irish Testacea" this species was noticed to be " not 

 uncommon at Naas on mud walls," p. 526 ; and " Bullock in Ire- 

 land," was given by Dr. Turton as a habitat. (Conch. Diet. p. 51.) 

 The H. caperata is in Ireland a very local species, is found in the 

 southern half of the island, and appears to be plentiful where it does 

 occur. From W. H. Harvey, Esq. I had specimens in 1833, which 

 were collected by him at Glanmire near Cork; on "dry banks at 

 Kilkee Castle near Ballitore, county Kildare," he had likewise pro- 

 cured the species. At Kingstown near Dublin, contiguous to Dr. 

 Turton's station, it has been collected by Mr. Warren. At La Ber- 

 gerie (Queen's county) it was a few years ago obtained in abundance 

 by Mrs. Patterson of Belfast. Among the specimens brought from 

 this locality (and presenting gradations in colour from the ordinary 

 state to that of being almost wholly of a deep reddish brown) was one 

 shell entirely of a pale amber colour, and transparent, the fine and 



* Montagu mentions their so occurring. 



f In Mr. R. Ball's cabinet, and collected by him here off a single plant 

 of Beta maritima, are specimens of a pure white colour, others of a uniform 

 dark chocolate brown, in addition to the more common state, white with 

 brown bands and the reverse. 



