202 STANDEK : MOLLUSCA OF PORTSALON. 



Carychium minimum Miiller,— Common alive under turf 

 and cow-dung on margin of water-holes on golf-links, and 

 dead amongst rejectamenta, Portsalon; under stones at 

 Kinny Lough, Shannagh Lough, and in burial-ground, 

 Fahan. Mostly a very short tumid form. 



Limnaea peregra Miiller. — Occurs in all the road-side 

 ditches and freshwater loughs. In Shannagh Lough a 

 beautifully clean and delicate form abounds, some of the 

 specimens being quite white. 



L. palustris Miiller. — In water-holes on golf-links, Portsalon, 

 and in Ballymagahy Lough. Not at all common. Some 

 specimens are decollate, and others are variety roseolahlata 

 Jeff, with a very deep rich red interior of lip. 



L. truncatula Miiller.— A few on mud of a dried-up ditch 

 near Portsalon. 

 *Physa fontinalis L. — A few young specimens taken in 

 Ballymagahy Lough, where I have no doubt it will be 

 plentiful enough later in the season, as mine were taken 

 from one dip of the dredge amongst some long grass. 

 ■*P. hypnorum L. — The Rev. A. H. Delap has sent speci- 

 mens of this species which he took in Reenbuoi Lough. 



Planorbis umbilicatus Miiller. — Alive in water-holes on 

 golf-links, Portsalon, and dead on shore of Shannagh Lough, 

 *P. spirorbis L. — Not uncommon but very small in Shannagh 

 and Ballymagahy Loughs. 



P. contortus L. — Small, compact, clean specimens in limited 

 numbers were taken in Ballymagahy Lough on alga. 



P. albus Miiller. — Plentiful in both Shannagh and Bally- 

 magahy Loughs. 



P. glaber Jeff. — A few nice specimens taken in Ballymagahy 

 Lough on alga. 

 *P. nautileus L. — Ballymagahy Lough. All belonged to the 

 v. crista L. 



P. fontanus Lightfoot. — A number of dead specimens on 

 shore of Shannagh Lough. 



J.C, vii., July 1893. 



