PONTOCYPRIS. 



137 



point behind ; greatest height situated in front of the middle and equal to somewhat more 

 than one third of the length. Anterior extremity broad and well rounded, posterior 

 obtusely pointed : superior margin obsoletely angular at its highest point, thence sloping 

 steeply with a gentle curve backwards ; inferior distinctly sinuated in the middle. Seen 

 from above, lanceolate with acuminate extremities ; greatest width at the anterior third, 

 scarcely equal to one third of the length. Shell surface granular or finely punctate, 

 thickly set with short appressed hairs, colour brownish. Right valve armed at the 

 infero-posteal angle with eight or ten short marginal teeth. 

 Length, ^oth of an inch. 

 Distribution, Hecent. — Norway, Great Britain, Ireland. 



Fossil. — Scotland : Dumbarton, Cartsdyke, Paisley, Dipple. Norway. Germany ? 



2. PoNTOCYPRis TRiGONELLA, G. 0. Sars. Plate XVI, figs. 26 — 28. 



1865. PoNTOCYPius TRIGONELLA, Sara. Oversigt. af Norges marine Ostracoder., p. 1 6. 

 1868. — — Brady. Monog. Recent British Ostracoda, p. 387, 



pi. XXV, figs. 31 — 34, and pi. xxxviii, 



fig. 3. 



Carapace, as seen from the side, subtriangular ; greatest height situated near the 

 middle and equal to half the length : anterior extremity well rounded, posterior narrower 

 but rounded, superior margin boldly arched, inferior very slightly sinuated in the middle. 

 Seen from above, elongate-ovate, widest a little in front of the middle ; width equal to 

 more than one third of the length, acuminate in front, rounded off behind. Surface of 

 the shell smooth or sparingly punctate. 

 Length, ^th of an inch. 



Distribution. Recent.-— ^ovyNdiy , Great Britain, Ireland, Mediterranean, Cape 

 Verd. 



Fossil. — Scotland : Loch Gilp, Paisley, Cartsdyke, Dipple. 



3. PoNTOCYPRis ACUPUNCTATA, Bradi/. Plate II, figs. 18, 19. 



, 1866. PONTOCYPRIS ACUPUNCTATA, Brady. Brit. Assoc. Report, p. 209; Monog. 



Recent Brit. Ostr., p. 386, pi. xxv, 

 figs. 53 — 56. 



Lateral view narrowly subreniform or subtriangular, highest in the middle, height 



equal to half the length. Anterior extremity rounded, posterior obtusely pointed. 



18 



