596 Proceedings of the Royal Irish Academy. 



Hyphydi'us ovatus, L. 



Ulstee. Coats^atjght. Leixstee. Mtin^siee. 



Antrim (Lagan Canal, B.). — Lough E'eagh (H. MS.). — Armagli 

 ('92 J. 4). — RoscomTnon (ITote Park, Ht.). — Galway (Clonbrock and 

 "W'oocliord, Ht.). — Dublin (Portmarnock, '53 Hn. ; Eoyal and Grand 

 Canals, Ht.).— Wexford (C.).— Clare and Limerick (Ht.).— Kerry 

 (KHlarney, Fg. MS.). 



Locally common. 



Ccelambus quinque-lineatus, Zett. 



UlSTEE. CoXXATJ&HT. LeINSTEE. MUJS'STEE. 



"Widely distributed and common where it occurs, generally found 

 in still water. It is said to be rather scarce in Great Britain, and in 

 addition to Britain, Ganglbauer mentions only Alsace, Belgium, and 

 Lapland as localities. Siberia. 



[ Ccdambus versicolor, Schall. — Down (near Belfast, '85 H.). — Dublin 

 (Canal, '53 Hn.).— Kerry (Eiver Flesk, KiUamey, '47 W. 1). 



Inserted on the strength of the retimlatus and coUaris of the above 

 references. Yery possibly these records were in reality founded on 

 specimens of C. v-kneatus, Zett. The records, Aimagh ('87 J. 1 ; 

 '88 J. 2) are to be referred to the following species (see '88 J. 5).] 



C. insequalis, F. 



UlSTEE. CoKNAtJGHT. LeEN'STEE. MuNSTEE. 



Common. 



C. confluens, F. 



Ulstee. Leixstee. Mitn'stee. 



Down (near Belfast, '85 H.). — Dublin (quarry holes near Lucan 

 and Clontarf, '00 Ht. 3 ; Loughlinstown, C.).— Limerick (Fg. MS.). 

 Local. 



C. novemlineatus. Staph. 

 Ulstee. 



Donegal (Coolmore, '94 J. Ht. Cr.).— Antrim (Toome, '00 J. 2).— 

 Armagh (Lowry's Lough, '87, J. 1 ; Marlacoo, J.). — Lough JSTeagh 

 (H. MS.). 



Rare ; seems to prefer clear water at edges of lakes, or in di'ains. 

 It has been recorded fi'om Scotland, K. England, Mecklenburg and 

 Lapland, and Heyden includes it in his Siberian list. 



