174 The hish Naturalist, vSeptember, 



Pisidiuin (/*. personaliun), but in IvOUgli Reelan these shells 

 were common in the shallow end into which the outlet of 

 Lough Salt drains. We were greatly disappointed in not being 

 able to locate Mr. R. Patterson's habitat for Pisidium 

 henslowiaiiuYn, which he collected in this district in the year 

 189I. In the lower lough a most suitable habitat for this 

 somewhat fastidious species was to be found where the fine 

 quartz sand brought down by the outlet of I^ough Salt mingled 

 with the mud of Lough Reelan ; but although worked care- 

 fully this spot only yielded the species mentioned. 



Tory I si. and. 

 Of the mollusca of Tor}^ Island little was known, and the 

 only published list known to us was that which appears in 

 the Ulster Journal of Archcsology for the year 1853, ^^^ which 

 the late G. C H5'ndman mentions Ag7iolimax agrestis^ Helix 

 ncwo7-alis^ and Limncsa peregra as being observed on the island. 

 Our friend, Mr. J. N. Milne, while in residence near Derry 

 twice visited the island, first in 1894, and again in 1897. On 

 neither of these occasions had he much time to spare for 

 collecting, but the following .species occurred to him : — 

 Hyaliriia alliaria. H. nitidula, H. crystallina, Helix 7ie7}ioralis, 

 Pupa eyli7idracea, Limcea peregra^ L. trujieaiula and Pisidiiwi 

 pnsilhwi. Mr. Milne thinks that he also saw both Helix 

 hispida and //. aspersa, the former under coffin-boards in the 

 graveyard, and the latter near a house in West Town, but as 

 he is not quite sure that he saw them, and as he has no 

 specimens to confirm the record, he wisel}- suggests that we 

 do not record these two species until we have further evidence 

 in the matter. Neither of these shells was observed on our 

 visit, but the environs of West Tov.'n did not particularly 

 attract our attentions. From experience gained on other west- 

 ern islands our steps were at once turned to the cliffs (Plate 10), 

 which in places shelter a luxuriant flora ; and to Legrehy, or 

 the Ram's Hollow, a fallen- in cave in which there is also 

 plenty of cover under the loose boulders and rank vegetation 

 with which the bottom is covered. With the exception of the 

 above-mentioned situations, the surroundings of West Town, 

 and some rough ground lying around Lough Ayes, the 

 greater part of the island has been completely stripped of its 

 turf by the inhabitants for fuel ; at least three-quarters of the 

 area is therefore quite incapable of supporting more than a 



