in the West of Ireland. 371 



ferred to were figured and briefly noticed by Mr. Brady in the 

 ' Monograph of the Kecent British Ostracoda ' (pi. 27. figs. 52, 

 53, p. 430) as being probably a form of C. decUvis. They 

 differ from the normal form of that species in being furrowed 

 or corrugated toward the hinder extremity, in the greater 

 sinuation of the inferior and the less pronounced arching of 

 the superior margin ; the extremities are also bordered with 

 a flange, which is marked by radiating hair-like lines. Seen 

 from above, the shell is rather more acutely pointed and more 

 tapering in front. Length -5^ inch. 

 Hob. Westport and Clifden Bays. 



Genus Loxoconcha, G. 0. Sars. 



Loxoconcha elUptica^ Brady. 



Loxoconcha elliptica, Brady, Monog. Rec. Brit. Ostrac. p. 43o, pi. 27. figs.SS, 

 39, 45-48, & pi. 40. fig. 3. 



The specimens of this species which we found in various 

 freshwater loughs and pools differ from the typical brackish 

 and marine form only in size and style of sculptiue, the punc- 

 tation of the shell being more distinct, but the papillae very 

 few or absent ; the size much less. 



Hah. In a pool amongst Utricularia minora south of Clifden, 

 and in Loughs Fadda and Ballinahinch. 



Genus Cytherura, G. O. Sars. 

 Cytherura JlavescenSy Brady. PI. XX. figs. 13, 14. 



Cytherura Jlavescens^ Brady, Ann. & Mag. Nat. Hist. ser. 4. vol. iii. p. 49, 

 pi. 8. figs. 13, 14. 



Carapace, as seen from the side, oblong, subrhomboidal, nearly 

 equal in height throughout ; length equal to twice the height ; 

 anterior extremity rounded, posterior fonning about the 

 middle a short obtuse process ; superior margin straight or 

 slightly incurved, inferior distinctly sinuated. Seen from 

 above, oblong ovate, widest in the middle ; extremities 

 pointed ; width nearly equal to the height. Surface finely 

 punctate and marked by distinct longitudinal ribs with 

 irregular and less distinct cross strife ; central areola dark- 

 coloured, saddle-shaped. Length -^ inch. 



Ilah. Clifden Bay, above low-water mark ; River Ouse at 

 Lynn, and Dungeness Bay, 7 fathoms (Mr. E. C. Davison's 

 dredgings). 



Genus CYTHEROFfERON, G. O. Sars. 

 Cytheropteron rectum^ Brady. PI. XX. figs. Q-Q. 



Cytheropteron rectum, Brady, Monog. Becent Brit. Ostrac. p. 476. 



Of this species, which was not figured in Mr. Brady's '3Io- 



