264 



any closer resemblance, either in the shape of the shell or in its colour. It 

 is moreover of much smaller size. The form recorded by G. W. Muller from 

 the Gulf of Naples under the name of P. coecum is unquestionably the same 

 species. The specimens examined by him were taken from preserved material, 

 and the inadequate specific name given to this form on the wrong supposition, 

 that the eye was wanting, may thereby most likely find its explanation. 



Occurrence. I have taken this form not unfrequently in the upper part 

 of the Oslo Fjord, as also in several other places, both on. the south and 

 west coasts of Norway. It is a strictly littoral species, occurring near the 

 beach among algae. 



Distribution. British Isles, Fosse de Cap Breton, Bay of Biscay, Holland, 

 Mediterranean, Kerguelen. 



Fossil. Scotland, South Wales. 



150. Paradoxostoma Normani, Brady. 



(PI. CXIX, fig. 2). 



Paradoxostoma Normani, Brady, Mon. Brit. Ostracoda, p. 458, PI. XXXV, figs. 39, 40. 

 Syn: Sclerochilus contortus var. abbreviata, Brady & Robertson. 



Specific Characters, Female. Shell less compressed than in the pre- 

 ceding species, seen laterally, oval subreniform in shape, rather broad behind 

 and much narrowed in front, greatest height only slightly exceeding half the 

 length, dorsal margin forming a bold and quite even curve throughout, ventral 

 margin deeply sinuated in front and considerably bowed behind, anterior 

 extremity distinctly deflexed and narrowly rounded at the end, posterior much 

 broader and terminating in a blunt corner; seen dorsally, regularly oblong 

 oval in outline, with the greatest width about equal to -Ir, of the length, both 

 extremities pointed. Valves, as in the preceding species, very thin and highly 

 transparent. Anterior antennae comparatively less slender, with the 2nd joint 

 of the terminal part not nearly attaining twice the length of the 1st. Posterior 

 antennae rather like those in P. abbreviatum, vesicle leading to the flagellum 

 however comparatively smaller, though distinctly cleft. Legs of the usual structure. 



Male somewhat resembling that of the preceding species, but with the 

 shell, seen laterally, narrower and more distinctly sinuated below. Copulative 

 appendages rather dissimilar, with the basal part rounded triangular in outline 

 and produced at the end in front to a beak-like deflexed prominence; terminal 

 part only slightly prolonged, resembling the said prominence both in size and 

 shape; basal lamella very small. 



