gS TJie Irish Naitcralisf. May, 



Lough Awaddy, Co. Fermanagh and East Donegal. 



Limnaea praetenuis. Bow. 

 Pisidiitm pusillum, Jenyns, 



Pisidium Lilljcborgii, Cless. 



Keenaghan Lough, Fermanagh and East Donegal. 



Planorhis carinatits (Mi'ilL) 

 Bithynia tentaculata (Linn.) 



Sphaerium corneum (Linn.) 

 Anodonta cygnea (Linn.) 



COLUMBKILLE LaKE, EaST DONEGAL. 



Limnaea praetenuis. Bow. 

 Pisidium pusillum, Jenyns. 



Pisidium Lilljeborgii, Cless. 



Lough Aghvog, East Donegal. 



Limnaea praetenuis. Bow. 

 Pisidium pusillum, Jenyns. 



Pisidiitm Lilljeborgii, Cless. 



AcHESONS Lough, East Donegal. 



Pisidium milium, Held. 



Pisidium Lilljeborgii Cless, 



Lough Lee, East Donegal. 



Amphipeplea glutinosa (MiilL) 

 Limnaea palustris (Miill.) 

 Bithynia tentaculata (Linn.) 



Sphaerium corneum (Linn.) 

 Pisidium pusillum, Jenyns. 

 Lilljeborgii, Cless. 



Ballywara Lough, East Donegal. 



Limnaea palustris (Miill.) 

 Physa fontinalis (Linn.) 

 Valvata piscinalis (Miill.) 



Pisidium pusillum, Jenyns. 

 Lilljeborgii, Cless. 



TULLYNACROSS LoUGH, EaST DONEGAL. 



Pisidium nitidum, Jenyns. 



Pisidium Lilljeborgii, Cless. 



Meenaskeagh Lough, East Donegal. 



Pisidium milium, Held. 



Pisidium personatum, Malm. 



