64 
The Irish Naturalist. 
March, 
Hyallnia nitida, Miill.— Common in suitable habitats, aud especially 
so ou limestone at Sessiagh Lough. 
H. excavata. Bean — Very sparingly. Found only at Dunlewy and in 
the woods at Glenveagh. 
Arlon ater, L.— The black form common everywhere, except at Glen- 
veagh, where lighter colours prevailed. 
A. subfuscus, Drap. — E^xcepting the above, the commonest Arion in 
the district. 
A. hortensis, Fer — Dunlewy, Falcarragh, Sessiagh Lough, and 
Glenveagh— except at the last locality was only found near dwellings. 
A. circumscriptus, Johnst. — Fairly common in woods at Dunlewy, 
not seen elsewhere. 
A. intermedius, Norniand.— Only found at Sessiagh Lough, under 
dead wood. 
LImax tnaximus, L.— Extremely rare— only seen in Mullangore 
wood, Glenveagh. 
L. marg'inatus, Miill. — Very abimdant everywhere, even on the old 
watch tower at the extreme point of Horn Head. 
Ai^riollmax agrrestis, L — Common in all localities visited. 
A, lasvlSy L» — EJverywhere in very damp places with H. nitida and K. 
aHtiDertigo . 
Amalia i^airates» Drap.— A few large specimens near the harbour at 
Bunbeg. 
A. SoWerbyi, F^n— Common at Dunlewy and Mullaghderg; two 
specimens only at Glenveagh. 
Helix pygmsea, Drap.— Plentiful in shell-pockets, alive only at Dun- 
lewy. 
H. rotundata, M 11.— Common throughout the district. 
H» pulGhella, Miill.— This species as usual outnumbered all others in 
the shell-pockets. It was taken alive at Horn Head and on luisli- 
ihny, with var. costata. Some of the specimens collected appear 
identical with H. excentrica, Sterki — as pointed out by some members 
of the Conch. Soc. at the annual meeting in Liverpool, 1905. 
h. aculeata> Miill.— A few spineless specimens were taken ou the 
shores ou Mullaghderg Lough. Common in most of the shell- 
pockets, but was not observed in those at Horn Head. 
H. lamellata, Jeff. — Only one specimen taken, in Mullangore wood, 
Glenveagh— though probably common there. 
H. hispida, L.— Almost absent from the district, though common at 
Dunlewy. Also seen at Sessiagh Lough. 
H. fusca» Mont. — Mullangore wood only, common but all very young. 
H. cricetorum, Miill. — This seems to be the headquarters of this 
species in Ulster, as it was in abundance on all sand-dunes in the 
district. Some very marked varieties, both in colour and banding, 
were collected ; while semi-scalariform specimens were seen in most 
places. It may be interesting to note that each area of sand-dunes 
seemed to have a distinctive form, which dominated all others. 
