187 



angular prominence, below a broad rounded expansion, anterior edge densely 

 fringed with hairs, posterior more sparingly hairy, but divided at the end of 

 the lower projecting corner into 4 very conspicuous obtuse teeth. Sculpture 

 well-marked and of the usual appearance. Antennae moderately strong, the 

 anterior ones with the terminal joint nearly half the length of the preceding 

 joint, the posterior ones with the apical claws comparatively short, flagellum 

 more prolonged than in the other species, extending considerably beyond the 

 middle of the penultimate joint. 



Male rather smaller than female, and having the shell comparatively 

 narrower. Copulative appendages with the terminal part obtusely triangular 

 in shape. 



Colour of shell yellowish brown. 



Length of adult female 0.72 mm. 



Remarks. The present species was described as early as the year 1850 

 by Baird, and was chiefly characterised by the lower corner of the posterior 

 extremity having the edge divided into 4 blunt teeth. The form examined by 

 me agrees in this character, as also in .the general shape of the shell pretty 

 well with the specimen originally described and figured by Baird; but Brady 

 has recorded some apparently more deviating forms adduced to this species. 



Occurrence The species seems to be of rather rare occurrence on the 

 coasts of Norway. I have only met with it quite occasionally in a single 

 locality, viz., at Riser, south coast of Norway, and Norman has taken a few 

 specimens at Lervik, Hardanger Fjord. 



Distribution. British Isles, Bay of Biscay. 



Fossil. Scotland. 



89. Hemicythere angulata, G. O. Sars. 



(PI. LXXXVI, fig. 2). 

 Cythereis angulata, G. O. Sars, Oversigt af Norges marine Ostracoder, p. 46. 



Specific Characters. Female. Shell, seen laterally, oblong subreniform 

 in shape, much higher in front than behind, greatest height about equal to 

 half the length, dorsal margin angularly bent in the ocular region and gently 

 arched in the middle, sloping rather steeply behind, ventral margin distinctly 

 sinuated in front, but nearly straight behind, anterior extremity broadly rounded 

 and somewhat bowed below, posterior much narrower and obliquely truncated, 

 without any obvious emargination in the middle, lower corner somewhat pro- 

 jecting and blunt at the end; seen dorsally, of a shape rather similar to that 



