OF THE KERGUELEN REGION OF THE GREAT SOUTHERN OCEAN". 407 



Fishes : 



* Lepidopsetta maculata, Glinther. 

 ~*Macrurus carinatus, Giinther. 



As in the case of the preceding lists, the majority of the 68 species were taken only 

 at one Station, in fact only four species (viz., Axinella erecta, lophon chelifer, Phakellia 

 papyracea, and Cribrella simplex) were found to be common to both the Marion Island 

 and Crozet Islands localities. 



The preceding list shows that in the vicinity of Marion and the Crozet Islands, in 

 depths between 210 and 550 fathoms, the Challenger procured 68 * species and 

 varieties of Metazoa, belonging to 61 genera. The large proportion of genera rela- 

 tively to the number of species is here very striking, for, except in five cases, each 

 individual species is the representative of a distinct genus. 



One of the species has received no specific name, and there is besides one variety 

 enumerated as well as the species to which it belongs, so that there remain 66 distinct 

 fully-described species the distribution of which may be discussed in detail. 



These 66 species may be divided into those that are known only from the dredgings 

 under consideration, and those that extend into other regions of the ocean. 



a. Species limited to the area under consideration. 



In the first place, we find that there are 30 species (or 44 per cent, of the total 

 number) which, as far as we know, are confined to the region represented by these 

 Stations. These 30 species are distinguished by an asterisk in the list, and we can say 

 nothing about them beyond the fact that they are known only from this region and from 

 depths between 210 and 550 fathoms ; only one of the species {Phakellia papyracea) 

 occurred both in the vicinity of Marion Island and of the Crozet Islands. 



b. Species extending outside the area under consideration. 



We come now to consider those species with a wider distribution which extend into 

 other regions of the ocean outside the area represented by these three Stations. The 

 number of such species is 36 (or 53 per cent, of the total number of species and varieties 

 found at these three Stations), and they may be divided into groups according to their 

 distribution in the tropical and extra- tropical regions of the ocean. Thus we find that 

 of these 36 species, 



21 species (or 58 per cent.) are known from other regions south of the southern tropic 



(see List Ilia.) ; 

 7 species (or 19 per cent.) are known from between the tropics, but not from regions 



north of the northern tropic (see List III6.) ; 



1 The species taken by Ross' Antarctic Expedition (Tetilla antardica) is not included in these and succeeding 

 remarks. 



VOL. XXXVIII. PART II. (NO. 10). 3 I 



