236 



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

 bergen. 



Fossil. Holland, Skotland. 



129. Bythocythere Bradyi, G. O. Sars, n. sp. 



(PI. CVIII, fig. 2). 



Specific Characters. Female. Shell moderately tumid, seen laterally, oblong 

 oval in shape, about equally high in front and behind, greatest height not 

 fully attaining z lb of the length, dorsal margin almost straight and scarcely 

 angularly bent either in front or behind, ventral margin slightly sinuated in 

 front and evenly convex behind, anterior extremity obtusely rounded, posterior 

 produced a little above the middle to a blunt protuberance; seen dorsally, 

 rather regularly fusiform in outline, without any distinctly marked mediate 

 constriction, greatest width in the middle and nearly equal to half the length, 

 anterior extremity obtusely pointed, posterior abruptly contracted to a short 

 conical prominence. Valves of somewhat firmer consistency than in the pre- 

 ceding species and less pellucid, with the lateral expansions rather slight and 

 conspicuously oblique behind, surface quite smooth and marked with some- 

 what distant small pits, edges unarmed. Eyes absent. Structure of the several 

 limbs very little different from that in the preceding species. 



Colour of shell not yet ascertained. 



Length of adult female 0.73 mm. 



Male unknown. 



Remarks. This form has been erroneously described and figured by 

 Brady as the male of B. constricta. It is however quite certainly a distinct 

 species, and may properly bear the name of its discoverer. 



Occurrence. Several specimens of this form, all of the female sex were 

 found among some Ostracoda collected, several years ago, at Bukken, outside 

 the Stavanger Fjord, from a depth of about 40 fathoms. I have not met with 

 it in any other place of the Norwegian coast. 



Distribution British Isles. 



130. Bythocythere dromedaria, G. O. Sars. 



(PI. CVIII, fig. 3). 

 Bythocythere dromedaria, G. O. Sars, Oversigt af Norges marine Ostracoder, p. 86. 



Specific Characters. Female. Shell rather tumid, seen laterally, of a 

 somewhat irregular shape, being gibbously vaulted in front and abruptly con- 



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