192 



Mr. S. I. Smith on the Abyssal 



Sclerocrangon Agassizii. 

 PoDtopliilus abyssi. 

 Sabinea princeps. 

 Glypliocrangon sculptus. 

 longirostris. 



Bytbocaris gvacili?. 

 Heterocarpus oryx. 

 Nematocarcinus ensiferus. 

 -. — cursor. 



II. Species prohahhj not confined to the immediate^ Neigh- 

 hour hood of the Bottom, hut showing structural evidence of 

 inhahiting Ahyssal Depths. 



Hymenodora glacialis. 



gracilis. 



Parapasipbae sulcatifrons. 



cristata. 



compta. 



Acantbepbyra micropbtbalma. 



brevirostris, 



Oplopborus, sp. 

 Notostomus robustus. 



tIscus. 



Meningodora mollis. 



III. Douhtful, hut prohahly inhabiting Abyssal DeptJis. 



Acantbepbyra gracilis. Bentboecetes Bartletti. 



~ ■ ~ " ■ Bentbonectes filipes. 



Bentbesicymus ? carinatus. 



moratus. 



Sergestes mollis. 



Epbyriua Benedicti. 

 Ilymenopena^us microps. 

 Aristeus ? tridens. 

 Hepomadus tener. 

 Amalopenseus elegans. 



IV. Species prohably not inhabiting Abyssal Depths. 



Acantbepbyra Agassizii. 



eximia. 



, sp. 



Pasipbae princeps. 

 Sergestes arcticus. 

 robustus. 



Summing up these lists according to the greatest depths 

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



The great differences in depth through which some of the 

 species, unquestionably inhabiting the region of the bottom, 



