442 DB MURRAY ON THE DEEP AND SHALLOW-WATER MARINE FAUNA 



LIST IV A. 



The following eighteen species have been recorded as occurring in the fossil condition, 

 and are therefore of interest : — 



Cytliere polytrema. 

 Kritho bartonensis. 

 Polycqpe orbicularis. 

 Sclerochilus contort us. 

 Xestoleberis depressa. 

 Saxicava arctica, 

 Dentulium entalis. 

 Homalogyra atomus. 

 Natica (Lunatia) grunlandica. 



Odostomia rissoidcs. 

 Puncturella noachina. 

 Scissurella crispata. 

 Hippothoa flagellum. 

 Idmonea atlantica. 



„ marionensis. 

 Salicornaria malvinensis. 

 Platydia anomioides. 

 Rliynelionella nigricans. 



LIST IV i. 



Turning now our attention to the 325 genera represented at these shallow- water 

 Stations, we find that the following 25 genera (or 8 per cent.) are known up to the 

 present time only from these Stations. It will be observed that the great majority (20) 

 of the genera each include only a single species taken at a single Station ; 1 genus, 

 however, with a single species was taken at two distinct Stations ; 3 genera each 

 contain 2 species taken at two Stations, and 1 genus contains 2 species, both taken at 

 the same Station, as indicated in brackets after the name : — 



Cinachyra 



(1 species taken at 1 Station). 



Socamoides 



(1 



species take 



;n at 1 Statii 



Scytophorus 



(1 



>> 



1 „ ) 



Sophrosyne 



(1 



» 



1 



Scliizotricha 



(2 



)> 



2 \ 



Astrurus 



(1 



)j 



1 



Staurotheca 



(1 



>i 



1 » ) 



Paralamprcps 



(1 



J! 



1 



Perlmaster 



(2 



)> 



2 ) 



Provocator 



(1 



)) 



2 



Salvatoria 



(1 



>> 



1 „ ) 



Marseniopsis 



(2 



JJ 



2 



Acanthechinus (1 



j) 



1 „ ) 



Ascopera 



(2 



)! 



1 



Cardenio 



(1 



3) 



1 » ) 



Chorizocormus 



(1 



)) 



1 



Cheirimedon 



(1 



)> 



1 ,, ) 



Morchellioides 



(1 



» 



1 



Dodccas 



(1 



J) 



1 „ ) 



Tylobranchion 



(1 



)) 



1 



Harpinioides 



(1 



)) 



1 „ ) 



Muruenolepis 



(1 



)) 



1 



Kerguelenia 



(1 



)) 



1 „ ) 



Zanclorhynckus (1 



)) 



1 



Protellopsis 



(1 



11 



1 „ ) 











In addition the two genera Eulagisca and Neasellus, each with a single species, are 

 known apart from these dredgings only from near the Rio de la Plata, in GOO fathoms. 



Onathophausia gigas, Willenioee-Suhm. Taken by the Challenger in the North Atlantic and in the Kerguelen ltegion. 



