1907- Rank. — Additional Records of ' Entomostraca. 307 



Lynceus rostratus, Koch. — This, which is a rare species in England, 

 I have taken in L> Mask, Glencar several, Ardee bog, and in some 

 numbers in Iy. Bresk, near Castle Archdale, Fermanagh. 



Leptorhynchus falcatus, Sars. — A rare species, not hitherto 

 recorded from Ireland. Iy. Bresk, near Castle Archdale, Fermanagh, 

 two specimens. 



Alonella exlgua, Iyillj. — Glencar, Sligo. 



A. nana, Baird. — Ardee bog, not rare. 



Peratacantha truncata, O. F. Miiller. — The Rosses, Sligo, abun- 

 dant ; Ardee bog ; Glencar, Sligo, one example with the ventral half 

 of lest duplicated, reminding one of the test structure of Monospilus 

 dispar. 



Pleuroxus trlgoncllus, O. F. Miiller. — The Rosses, Sligo, abundant. 



Chydorus ovalis, Kurz.— Glencar, Sligo. One in the maxillae of a 

 specimen of Niphargus Kochianus dredged from the depths of Iy. Mask. 



Monospilus dispar, Sars.— Upper Iy. Erne, near Belleisle, two. 



Anchlstropus emarglnatus, Sars.— A few specimens near Belle- 

 isle, Upper Iy. Erne; and two on the shores of Lower Iy. Erne, 

 near Castle Archdale. 



Bythotrephes longimanus, Lillj— L. Neagh. 

 In L. Conib I have met with a very large form of this species, with 



the caudal spine curved similarly to that of the small var. arcticus of 



Iyilljeborg ; and setose at its extremity. 

 The Iy. Erne record of this species in my list was quoted from Dr. 



Creighton. It should be deleted, as I have only found B. Cederstromii in 



Iy. Erne, and the latter species was not detected in Great Britain when 



Dr. Creighton compiled his list. 



OSTRACODA. 



Cypria cxsculpta, Fisch. — Drumreaske, Monaghan. 

 Cyciocypris laevls, O. F. Miiller. — Drumreaske ; Iy Corrib. 

 Herpctocyprls rcptans, Baird.— L Corrib. 

 Cyprldopsls plcta, Straus.— Two from L. Mask. 

 Candona stagnalls, G. O. Sars.-L. Conn, one. 

 Llmnlcythere-tnoplnata, Baird.— Glencar, Co. Sligo ; Iy. Mask. 



COPEPODA. 



CYCLOPIDJE. 



Cyclops strenuus, Fisch.— Ballinahinch, Connemara Iy. Mask, 



Iy. Corrib, L. Neagh, very abundant. 

 C. blcuspldatus, Claus.— Cornacassa, Monaghan. 

 C. virldls, Jurine.— Killyhoman, near Aughnacloy. 



Var. glgas— Iy. Neagh, abundant; Drumreaske, Monaghan; L. 



Unshin and pools near Iy. Columbkille, Ballyshannon (Creighton). 

 C. fuscus, Jurine (coronatus, [Claus signatus, Koch).— Drumreaske, 



Monaghan. 



A 2 



