Galway Excursio7i.-' Mollusca, 269 



Succlnea putris, L.— Banks of river at Clare-Galway ; shore 01 

 Lough Corrib near Oughterard; and on Inchangoil. Common. 



S. eleg^ans, Risso. — Some pretty examples of var. ochracea, Betta, on 

 shore of Lough Corrib, in Mr, Hodgson's demesne. 



Carychlum minimum, Mull. — Common at Annaghdown. 



Alexia dentlculata, Mont. — Common and very fine near Gentian 

 Hill (Kane). 



Limnaea stag-nails, L.— Abounds in the Victoj-ia ?r^2^ tank at the 

 Botanic Gardens, Glasnevin. Common in Lough Corrib at Annaghdown. 

 On the shore of Inchangoil a curious little obese form is very plentiful, 

 which agrees exactly with specimens of var. fossarina in my cabinet from 

 Lough Erne. 



L. peregra, Mull. — Common in all the loughs and streams ; variable 

 in form, but small in size. 



L. palustrls, Mull. — Gentian Hill (Kane). Common in Lough 

 Corrib, of a small obese form — var. odesa, Taylor. In River Shannon 

 rejectamenta a few small specimens occurred. ' 



L. truncatula, Mull. — River Shannon, and river at Ballynahinch ; 

 occurs in rejectamenta. Plentiful at Annaghdown. 



Planorbis marginatus, Drap.— Plentiful at Annaghdown ; Inchan- 

 goil ; and in Lough Corrib generally. 



P. spirorbis, L. — Common in swampy places in Lough Corrib. 

 P. contortus, L.— A few cast up on the shore at Inchangoil. 

 P. a! bus, Mull. — Plentiful at Inchangoil. 

 P. crista, L. — Several specimens on caddis-cases at Annaghdown. 



Ancylus fluviatilis, Mull. — Plentiful in Lough Corrib, especially 

 at Inchangoil, where the stones are thickly studded with a small form of 

 var. gibbosa, Bourg. Dead shells abundant on caddis-cases in the rejecta- 

 menta of River at Ballynahinch. 



A. lacustris, L. — Three specimens from dead stems of Eqtnsetuin^ 

 River Shannon. 



Bythinia tentaculata, L.— In Ballynahinch River rejectamenta ; 

 common in Lough Corrib everywhere. 



Valvata plscinalis. Mull. — Common at Annaghdown and Inchan- 

 goil. 



Sphaerlum corncum, L. — A small form is common in all the 

 loughs examined. 



Pisidium pulchellum, Jenyns. — Lough Corrib, at Annaghdown. 



P. milium, Held. (= P, r^5«/w, Jeff.)— The only mollusc found in a 

 small pond on Aranmore, about a mile from Kilmurvy (Standen). 



P. pusiilum, Gmel. — Common in Lough Corrib, and occurred in 

 rejectamenta of the Shannon at Athlone. 



Anodonta cygnea, L. — Probably common in some of the quiet 

 parts of Lough Corrib. A broken valve was found at Annaghdown. 



The semi-fossil land shells of Dog's Bay, Connemara, possess a peculiar 

 interest, and the large H. ncmoralis obtained there are well known to 

 most conchologists. In the Journal of Conchology for April, 1S85, Mr. R. 

 D. Darbishire has a short paper on this remarkable shell-deposit as 

 observed by him in 1865. He describes them as occurring in an old sward 

 which appeared as a black band, about two inches deep in the face of a 

 small cliff or section of sandhill closing the bay to the eastward. Our 

 stay at Roundstone afforded an opportunity of personally investigating 

 the deposit, of which we availed ourselves to the full. The features of 

 the isthmus between Dog's Bay and Gorteen Bay appear to have altered 



