192 



Mr. S. I. Smith on the Abyssal 



Selerocrangon Agassizii. 

 Pontophilua abyssi. 

 Sabinea princeps. 

 Glypbocrangon sculptus. 

 longirostris. 



Bythocaris gracilis. 

 J Leterocarpue oryx. 

 Nematocarcinua ensiferus. 



IT. 



Species probably not confined to the immediate Neigh- 

 bourhood of the Bottom, but shoioing structural evidence of 

 inhabiting Abyssal Depths. 



Acantbepbyra micropbtbalrna. 



brevirostris. 



Oplopborus, sp. 

 Notostomus robustus. 



vpcus. 



Meningodora mollis. 



Hymenodora glacialis. 



gracilis. 



Parapasipbae sulcatifrons. 



cristata. 



compta. 



III. Doubtful, but probably inhabiting Abyssal Depths. 

 Acanthepbyra gracilis. Bentboecetes Bartletti. 



Ephyrina Benedicti. 

 Hymenopenasus microps. 

 Aristeus ? tridens. 

 Hepoinadus tener. 

 Arnalopenasus elegans. 



Bentbonectes filipes. 

 Bentbesicymus ? carinatus. 



ruoratus. 



Sergestes mollis. 



IV. Species probably not inhabiting Abyssal Depths. 



Acantbepbyra Agassizii. Pasipbae princeps. 



eximia. Sergestes arcticus. 



, sp, robustus. 



Summing up these lists according to the greatest depths 

 from which the species are recorded, we have the following : — 











Class. 



Abyssal. 



Below 1000 

 'fatbs. 



Below 2000 

 fatbs. 



I. From tbe neigbbour- 

 bood of tbe bottom 



II. Abyssal, but not con- 

 fined to tbe bottom. 



III. Doubtful, but probably 

 abyssal 



21 



11 



11 

 6 



18 



11 



10 

 5 



5 



7 



6 



4 



IV. Probably not abyssal . . 



Total 



49 



44 



22 



The great differences in depth through which some of the 

 species, unquestionably inhabiting the region of the bottom, 



