52 



with it rather frequently in 2 other localities, viz., at Korshavn and Risor. 

 Especially in the first-named locality it occurred very abundantly on a sandy 

 bottom in the laminarian region. The animal is not nearly so agile as the 

 species of the preceding genus, though by no means devoid of swimming power. 

 The swimming movement is however rather slow, and look merely as a soft 

 gliding through the water generally close over the bottom. The bright purplish 

 colour of the shell renders this Ostracod easily discernible, and is even partly 

 retained in specimens preserved for a longer time in alcohol. 



Distribution. British Isles (Brady), coast of France (Fischer), Mediterranean 

 (G. W. Muller). Fossil in the postglacial deposits of Norway and Scotland. 



3. Erythrocypris hispida, G. O. Sars. 



(PI. XXIII, fig. 1) 

 Pontocypris hispida, G. O. Sars, Oversigt af Norges marine Ostracoder, p. 16. 



Specific Characters. Female. Shell rather more tumid than in the pre- 

 ceding species; but, seen laterally, of a much similar elongate triangular shape, 

 though scarcely so much exerted behind;- -seen dorsally, broadly lanceolate in 

 outline, with the greatest width in the anterior part, and considerably exceeding 

 Va of the length. Surface of shell densely covered with unusually long recurved 

 hairs, giving it a very hirsute appearance; right valve with only 5 serratures 

 below the posterior extremity. Structure of the several limbs very like that in 

 the preceding species. Caudal rami, however, comparatively less strong and 

 scarcely at all attenuated distally; apical claws less unequal and rather thin. 



Male with the palps of the maxillipeds transformed in an analogous 

 manner to those in the type species, though scarcely as large, and having the 

 thumb-like process of the propodus far less prominent. Copulative appendages 

 rather unlike those in the preceding species, being of much smaller size and 

 more simple structure, without any lateral lappet, and with the extremity simply 

 rounded off; chitinous string of the inner face curved almost in a circle. 

 Caudal rami exactly as in female. 



Colour yellowish brown. 



Length of adult female scarcely exceeding 0.80 mm. 



Remarks. The above-described form is nearly allied to the preceding om 

 but may at once be distinguished by the less compressed shape of the she 1 

 and by its very coarse clothing of hairs, the latter character having given rise 

 to the specific name proposed. In the living state it is also readily distinguished 

 by the different colour of the shell. 



