I9IO. STEI.FOX AND WKI.CH. — Rosapeuua. — Molhisca. 173 



Hyalinia alliaria, Helix ericetorum^ H. nevioralh^ H. aspersa, 

 and P7Cpa cylindracea were noted. On Rough Island, in 

 Murder Hole Bay, approachable at low tide, we took Helix 

 ericetorinn^ H. nemoralis, Pupa cylindracea, and a very small 

 form of Claicsilia bidentata. The best spot visited during the 

 day was the smaller of the Melmore lakes, around which 

 anion"" other snails live Limax a7-doi'7ivi, Hyalinia cellaria, and 

 Pupa 7Hnsconcin, and in the lake itself Limncea peregra, Plan- 

 orbis C7-isla, Valvata cristata, V. pisci7ialis, Pisidium subtr7i7ica- 

 him, P. 7iiiid7ini, P. he7islozi>ia7i7i7u, P. perso7iat7i7n,P. gassiesia- 

 7m7n, and P. Lilljeborgii, In the real Melmore Lough nothing 

 new was observed, but fine specimens of Li77i7icea a7i7'icularia 

 var. acuta, L, peregra^ and particularly L. pcihistris were 

 collected, with Pla7iorbisalb7is, P. glaber, P. c?'ista, and Pisidiiwi 

 gassiesia7i7C7n. It is of special interest to find Pla7iorbis alb7cs 

 in this localit}^ as it is always local and seldom common 

 in the north and west, when we have once left the limestone 

 areas behind. 



The day in Glenveagh produced nothing new either, but 

 Hyali7iia excavata var. vitri7ia and Helix la7nellata were both 

 refound, while on the journey Li77iax maxi?7i7is, Helix hispida, 

 and Balea poversa from the wood west of I^ackagh Bridge ; 

 Valvafa pisci7ialis, Pisidiiwi S7ibtr7i7icat7un, P. gassiesia7i7wt, 

 and P. pusillum from Lough More, Creeslough ; and A7io7i 

 i)iie7-7nedius, Hyalinia 7iitidula var. Hel77iii, H. pura, and P7(pa 

 a7iglica from a small glen near Glassan are perhaps worth 

 mentioning. 



Next comes our excursion to Lough Salt, and owing to its 

 elevated position and to its being partly formed by erosion in 

 the limestone, we give the full list of species taken in this 

 locality. This lough lies at an altitude of 817 feet above the 

 sea, and its neighbour. Lough Reel an, about 50 feet lower. 

 The following shells were collected by us along the shores of 

 Lough Salt : — Agriolimax ag7-estis, Limax arbor7i7n, A7'io7i ate7% 

 A^ i7ite7'7nedius, Hyaliiiia allia7'ia, H. 7iitidula, H. p7ira^ H. 

 radiat7ila, H. crysfalli7ia, Helix rotu7idata, Cochlicopa lubrica, 

 and P7ipa cyli7id7-acea. In both lakes A7ieyl7ts fl7iviatilis and 

 Li77nicEa peregra were common, the latter resembling slightly 

 a large form of the var. Boissyi, but wanting the sharp spire 

 and clean cut suture of that variety. One specimen, dead, of 

 L. i77i7icatula was picked up in the marsh between the two 

 lakes. In Lough Salt we were only able to discover one 



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