T904. Welch & Stklfox. — Sliao Coiiference, Molhisca. 191 



it from only five counties in England, four of which are inland, one 

 in Scotland, and seven in Ireland, the last all maritime, but the 

 county in which it is most plentiful— Donegal— is not given m the 

 Census. We have never taken it away from coast sandhills, and all 

 records so far prove it to be in Ireland a strictly maritime species. 

 Balea perversa, L.— Local and not abundant ; Lissadill Glen, on an 

 old willow between Hazel wood and Rockwood, Church Island, 

 Glencar woods, and Swiss Valley. Swarming on top of a wall at 

 Dromahaire Abbey. 



Clausula bldentata, Strom.— Fairly common all over the district 

 especially in old graveyards. 



Succlnea putrls, L.— Rosses Point, Lissadill, Rockwood, Glencar 

 (Sligo), Glencar at fall, none full-grown. 



S. elegrans, Risso. — Rosses Point, Raghly, Rockwood, Carrovvmore; 

 lake shores, Glencar. These were mainly a small deep red form with 

 dark or very dark animal. We do not believe any authority could 

 definitely separate this species from the preceding in some Irish 

 localities ; the two grade into each other so often. 



Carychlum minimum, MulL—Common in most damp places ; 

 some in the shell-pockets also. 



Limnaea stagrnalls, L. — A few dead on lake shores and alive in pond* 

 Rockwood ; on shore of Church Island. 



LImnaea pereg'ra, Mtill. — Common in each locality except Strandhill 

 and Knocknarea Glen. A small form in stream crossing road high 

 up in Gleniff. Var. lacusiris and var, acuminata with other forms at 

 Rockwood. 



Li palustris. Mull.— Rosses Point, Rockwood and Church Island, 

 Glencar Lake, Bonnet River at Dromahaire. 



L. truncatuia, Mull. — Common on mud of very shallow dried up pools 

 in dunes at Raghly ; a few at Lissadill and Doonfore ; Lough Gill ; 

 pool near Sligo ; Glencar (Sligo). 



Physa fontlnalis, L.— Common in lakelets at Rosses Point; in drains 

 at old castle, Raghly ; Glencar Lake (both counties). Var. albina 

 occurred with the type on the leaves of the Yellow Water-lily, near 

 Doonee Rock. 



[Planorbls corneus, L.— See/. N., x., 1901, p. 131. We were unable to 

 visit the pond.] 



P. vortex, L.— Swarming on water plants in Lough Gill, none full 

 grown, but many adult dead on shore ; Glencar Lake (Sligo). This 

 species, unlike the next, seems to prefer permanent waters of lakes 

 and slow rivers. It has its main habitats in the lakes along the N.W, 

 margin of the limestone plain. 



P. spirorbis, ly.— One dead specimen only in flood debris, lake shore 

 nearTobernault ; Miss Warren reports \\.{loc. cit.) very common in old 

 bog drains further west in the county. 



B 2 



