Crustacea Ostracoda of Norway. 119 



The young of the former is very much shorter and higher, in fact 

 shorter and higher than the adult, and less incurved. The young of 

 the latter is very nearly as the adult, the extremities much more 

 nearly equal than in this species, and consequently the whole shape 

 different ; it is also more convex. It is possible that the present 

 species may hereafter prove to be a Sclerochilus, and not a Para- 

 doxostoma. The specimens described had been dried before they 

 were noticed, though living when collected. 



Section II. PLATYCOPA. 



Earn. Cytherellidae. 



Genus Cytherella, Bosquet. 



Cytherella abyssorum, G. 0. Sars. 



Stoksund, in Hardanger Fiord, 126 fath. ; off Lervig, 200 fath. ; 

 Bergen Fiord to the south of Bukken, 150-200 fath. ; Oster Fiord, 

 100-200 fath. ; Solems Fiord, Floro, 50-60 fath. 



Section III. CLADOCOPA. 



Fam. Polycopidae. 

 Genus Poltcope, G. O. Sars. 



Poh/cojje orbicularis, G. O. Sars. 



Lervig Bay, 3-25 fath. ; Bergen Fiord, south of Bukken, 150-200 

 fath. ; Oster Fiord, 100-200 fath. ; Bog Fiord, East Finmark, 20- 

 30 fath. 



Section IV. MYODOCOPA. 



Fam. CypridinidaB. 



Genus 1. Cypridina, Milne-Edwards. 

 Cypridina norveyica, Baird. 



Hardanger Fiord, off Lervig, 150-180 fath., and in Stoksund, 

 80-100 fath. 



Genus 2. Philomedes, Lilljeborg. 

 Philomedes Lilljeborgii, G. O. Sars. 



Drobak, 30-100 fath. ; Hardanger Fiord, off Lervig, 150-180 

 fath., and in Stoksund, 80-100 fath. ; Bergen Fiord, south of 

 Bukken, 150-200 fath. 



Philomedes brenda, Baird. 



Drobak, 20-100 fath. ; East Finmark, in Varanger, Bog, and 

 Klosterelv Fiords, 3-100 fathoms. In one bay on the south side of 

 Bog Fiord it occurred in extraordinary abundance in 3 fath. 



