35 



the preceding species occurred; the female was found among some specimens of 

 P. orbicularis collected, many years ago, of the west coast of Norway, the exact 

 locality not being noted. 



5. Polycope pustulata, G. O. Sars. 



(PI. XVI, fig. 3) 



Polycope pustulata, G. O. Sars. Oversigt af Norges Crustaceer, Part II, Chr. Vid. Selsk. 



Forh. 1890, p. 53. 



Specific Characters. Female. Shell, seen laterally, of the usual short 

 rounded shape, with the anterior extremity slightly bowed in the middle, the 

 posterior blunted and exhibiting above trace of an angle; seen dorsally, of a 

 rather peculiar shape, being narrowed in front and much dilated behind, with 

 a very conspicuous pustuliform prominence on each side. Valves smooth, 

 without any obvious sculpture, and quite unarmed in front. Caudal rami resemb- 

 ling in shape those in P. orbicularis, the triangular processes of the margin 

 between the claws being rather produced. 



Colour about as in P. orbicularis. 



Length of shell 0.56 mm. 



Male unknown. 



Remarks. The present form may at once be distinguished from any of 

 the other known species of the present genus by the peculiar pustuliform ex- 

 pansions of the hinder part of the shell, best seen in the dorsal or ventral aspect. 

 Otherwise it seems to be closely allied to the type species. 



Occurrence. A solitary female specimen only of this form has as yet 

 come under my notice. It was found, many years ago, off the west coast of 

 Norway, the exact locality not being noted. Out of Norway this form has 

 not yet been recorded. 



6. Polycope sublaevis, G. O. Sars, n. sp. 



(PI. XVII, fig. 1) 



Specific Characters. Female. Shell, seen laterally, resembling in shape 

 that of the type species, though having the anterior extremity a little more 

 bowed in the middle; seen dorsally, regularly oval in outline, with the lateral 

 contours quite evenly curved, and the greatest width only slightly exceeding 

 half the length. Surface of valves nearly smooth, though in some cases a very 

 faint reticulation may be discerned; anterior edges unarmed. Caudal lamellae 

 resembling in structure those in P. orbicularis, though comparatively somewhat 

 narrower, with the anterior corner more produced and the claws shorter. 



Male, as usual, very like the female in its general appearance. Left 

 caudal lamella produced in front to a comparatively short and stout, almost 



