53 



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

 of the Christiania Fjord in depths ranging from 10 to 20 fathoms, muddy 

 bottom. It also occurs occassionally at Risor, south coast of Norway in about 

 the same depth. 



Distribution. British Isles (Brady). 



4. Erythrocypris pallida, G. W. Muller. 



(PI. XXIII, fig. 2) 



Erythrocypris pallida, G. W. Muller, Die Ostracoden des Golfes von Neapel, p. 259, PI. 11, 



figs. 12, 13, 4345. 



Specific Characters. Female. Shell of a very similar shape to that in 

 the preceding species, but of rather smaller size, and with the surface far less 

 hirsute, the hairs clothing it being rather short and delicate. Right valve, as 

 in E. hispida, with only 5 serratures below the posterior extremity. Caudal 

 rami comparatively more slender than in that species, with the extremity some- 

 what produced in front of the apical claws, the latter moderately strong, but 

 scarcely exceeding half the length of the corresponding ramus. 



Male with the palps of the maxillipeds of a similar structure to that in 

 E. hispida. Copulative appendages, however, somewhat differing in shape, 

 their outer part being conspicuously more expanded and forming inside a well 

 marked obtuse angle. 



Colour much paler than in either of the 2 preceding species. 



Length of adult female scarcely exceeding 0.70 mm. 



Remarks. The above-described form is unquestionably identical with the 

 Mediterranean species recorded by G. W. Muller, agreeing, as it does, pretty 

 well with the description and figures given by that author 1 Though closely 

 allied to the 2 preceding species, it may be readily distinguished by its smaller 

 size and much paler colour, the latter character having given rise to the specific 

 name proposed by G. W. Muller. 



Occurrence. \ have taken this form not unfrequently at Korshavn in the 

 same places where E. mytiloides occurred, occasionally also at Risor. 



Distribution. Mediterranean (G. W. Muller). 



Gen. 3. Argilloecia, G. O. Sars, 1865. 



Generic Characters. Shell more or less elongate, and of firmer consi- 

 stency than in the 2 preceding genera, though scarcely calcareous, surface 

 smooth and almost bare of hairs. Valves subequal, each provided at the post- 



