90 JOURNAL OF COXCHOI.OOY, VOL. I3, NO. 4, OCTOBER, I9IO. 



wedged between them. As will be seen in the photograph showing 

 the shell from beneath the two valves are not symmetrical, though 

 both show the same depression about the middle. 



The two out-growing portions which start from the umbones are the 

 most remarkable features. They, too, are unsymmetrical, the left hand 

 one being more pronounced and itself very much distorted. 



The colour is yellowish brown with streaks of dark green. 



Unfortunately I did not preserve the animal, but I remember that 

 it, too, was deformed, and there were parts of the body corresponding 

 in shape and position to the outgrowing portions in the valves. My 

 knowledge of shells is not sufficient for me to be able to. form any 

 opinion as to the cause of this curious malformation, but I think it 

 may probably be due to an accident having happened to the animal in 

 early life. 



The photographs are life size. 



Shell Drift at Ballinacurra, Limerick. — Since writing^ the short note on 

 Carychiuni minitniuii, I hive further examined some of this drift, and append a list 

 of the species found in it. .Mr. R. Welch, of Belfast, and.Mr. A. S. Kennard hive 

 also looked over some boxes of drift that I sent them, and have given me lists of 

 what they have found, so that the following may be taken as a fairly representative 

 list of the shells in the drift of the Ballinacurra Marshes near Limerick: — Hyalinia 

 cdlm-ia, H. nitidida, H. ptira, H. cryslallina, H. fulva, Punctum fygmatim, 

 PyratHtdnla roiundala, Helix nemoralis, Hygromia ru/escens, H. hispida, H. gran- 

 Jilaia, Vallonia pnkhella, V. costala, V. excentrica, Pupa cylindracea. Vertigo 

 antivertigo, V. pygiiuea, V. edentula, Baka perversa, Clausilia bidentata, Cochlicopa 

 hibrica, Sticcinea putris, S. elegans, Carychitim tninimum. Acme lineata, Livmcea 

 palustris, L. iriiiicalitla, L. pereger, Planorhis viarginatus, P. vortex, P. spirorbis, 

 Ancylus ftuviatilis, Bythinia tentaculata, Valvaia piscittalis, Neritina Jluviatilis, 

 Paludestrina jenkinsi. — Harry Fogerty {Read before the Society, June 8ih, 

 1910). 



I /. of Conch., vol. 13, p. 71, 



