2i8 The hish Naturalist, August, 



Polyphemus pediculus, DeGeer. — Ivougli Corrib and Lough Bray 



(iv.) ; Ivough Columbkille, Ballyshannon (ix.) ; Ivougli Mask, 



abundant ; Drumreaske and Glaslough, Co. Monaghan ; Kylemore 



and Clifden, Connemara ; Lough Erne ; Lough Arrow. 

 Bythotrcphes longimanus, Lillj. — Upper Lough Erne (v.) ; Lough 



Melvin (ix.) ; Lough Mask, scarce; Lough Ree ; Lough Gill ; Lough 



Arrow. 

 B. Cederstrbmii, Schoed. — Upper and Lower Lough Erne, very 



plentiful. 

 Leptodora hyalina, Lillj.— Upper Lough Erne (v.); Galway (vi.); 



Lough Mask, scarce ; Lough Caragh ; Dahtrey, Co. Monaghan ? 



Lough Gill ; Lough Ree; Lough Arrow. 



A. list of such Copepoda and Ostracoda as have hitherto 

 been recorded from Ireland will follow in a stibsequent 

 number. 



Drumreaske, Co. Monaghan. 



NOTES. 



BOTANY. 



Distribution of Vaucheria in Ireland. 



In the report on "Freshwater Algae of the North of Ireland," by W. 

 and G. S. West (reviewed in h-ish Nat., April, 1903), reference is made to 

 the distribution of the genus Vaucheria. Messrs West did not mean 

 that the genus is absent from Ireland — though the language is some- 

 what ambiguous — but merely that it had not been observed by them. 

 On sending a specimen, recently obtained at Antrim, to Mr. W. West, 

 F. L.S., he kindly named it as Vaucheria sessi/is, and referred me to the 

 " Guide to the County of Dublin," published for the Brit. Association 

 Meeting in 1878. Here there is a list of seven freshwater species 

 recorded for the counties of Dublin and Wicklow alone. It seems 

 strange that the genus should have escaped the notice of two such dis- 

 tinguished algologists as the Wests, father and sou. 



J. Adams. 



Royal College of Science, Dublin. 



