The Irish Natmalisf. 



August, 



Valvata cristata Miill. — Common throughout, occurring in practically all 

 waters. It is one of the most abundant fossils in the marls. Var. 

 alba was taken near Kinvarra. 



Acicula lineata Drap. — Very rare. Seen only in woods at Portumna and 

 Castle Taylor. Var. alba with the type in each locality. 



Neritina fluviatilis L. — Local. Abundant in Lough Rea and Lough Derg. 

 Common in the Shannon, the Suck, and Diniry rivers ; also in the 

 canal at Ballinasloe. Vars. cerina and nigrescens in Lough Rea and 

 Lough Derg. Vars. trifasciata and undulata are frequent. 



Anodonta cygnea L. — Local and rare. In the Shannon at Portumna 

 Bridge and in the canal at BaUinasloe. I have been informed that 

 it occurs also in a small lake a few miles from Portumna, but have not 

 been able to verify the statement. 



Sphaerium corneum L. — Frequent and generally distributed. Abun- 

 dant in Lough Rea, Lough Derg, Lough Atorick, and most rivers 

 and large ditches. Var. nucleus occurs in L.Rea and in ditches near 

 Portumna. A pure white form was taken in Lough Rea and L. Cutra. 



S. lacustre Miill. — Very rare and local. Taken only in the Shannon at 

 Portumna Bridge, and in a drain in the demesne at Portumna. 



Pisidium amnicum IMiill. — Local and rare. In the Shannon at Portumna 

 Bridge ; the Diniry river ; River Suck and canal at Ballinasloe ; 

 sparingly in Lough Rea and, a thin-shelled, fragile form in a mill- 

 pond at Woodford. Fossil in the Portumna marls and in the river 

 deposit at Ballinasloe. 



P. henslowanum Sheppard. — Locally abundant in the River Suck at 

 Ballinasloe. 



P. subtruncatum Malm. — Frequent in lakes, rivers, and canal. Lough 

 Rea, Ballinasloe, Portumna, Kilmacduagh, and L. Tullaghnafrankagh. 



P. pulchellum Jenyns. — Lough Rea, L. Derg, L. Tullaghnafrankagh, and 

 in a stream at Kilmacduagh. 



P. casertanum Poli. — Lough Rea, L. Alee near Woodford, L. Tullaghna- 

 frankagh, near Ballinasloe, and very large specimens in a roadside 

 drain near Loughrea. 



P. obtusale Pfeiffer. — In a drain near Portumna. Near Ballinasloe, and 

 in Lough Alee near Woodford. 



P. nitidum Jenyns. — Lough Rea, L. Tullaghnafrankagh. Near BaUina- 

 sloe and Oranmore. 



P. pusillum Gmelin. — Lough Rea, L. Atorick, L. Alee, L. Tullaghna- 

 frankagh, and in a stream near Kilmacduagh. 



P. personatum Malm. — Lough Rea, canal at Ballinasloe, and drain near 

 Portumna. 



P. milium Held. — Lough Rea, L. Derg, L. Alee, L. Tullaghnafrankagh, 



bog near Ballinasloe, and drain near Portumna. 

 P. hibernicum Westerlund. — Lough Tullaghnafrankagh near Ardrahan 



on a caddis-case. 

 P. Steenbuchi Miill. — Lough Rea. 



P. Lilljeborgi Clessin.— Lough Rea, L. Atorick, L. Alee, and in bogholes 

 near Ballinasloe. 



Ashburton, Cork. 



