OF THE KERGUELEN REGION OF THE GREAT SOUTHERN OCEAN. 391 



Corallimorphus profundus (2). 

 Dytaster exilis (2), 

 Ophiomusium armiyerum (2). 



„ lymani (2). 



Aspidodiadema microtuberculatum (3). 

 Cystecliinus clypeatus (2). 

 Benthodytes mamillifera (2). 

 Cucumaria abyssorum (3). 

 Holotlmria murrayi (2). 

 Pcelopatides confundens (3). 

 Nothria ehlersi (2). 



„ pycnolrrancldata (2). 

 Bairdia hirsuta (2). 



Cyphocaris micronyx (2). 

 Acanthepltyra sica (2). 

 Aristeus armatus (2). 

 Benthesicymus brasiliensis (3). 

 Glyplwcrangon rimapes (2). 

 Pontopliilus gracilis (2). 

 Sergestes profundus (2). 

 Willemoesia leptodaclyla (3). 

 Parapagurus abyssorum (3). 

 Bugula margaritifera (2). 

 Cettularia crateriformis (2). 

 Cldorophthalmus gracilis (3). 



The preceding list (List II.) of species from the deep-water areas of the Southern 

 Hemisphere south of the southern tropic and outside of the Kerguelen Region, shows 

 that in the regions of the Southern Hemisphere represented by the twenty-nine Stations 

 referred to, the Challenger procured in depths exceeding 1000 fathoms representatives of 

 253 species and varieties of Metazoa, belonging to 182 genera. To these numbers must be 

 added 48 species and 24 genera mentioned in footnote on page 36, not included in this 

 list, having been already enumerated in the list (List I.) of species from the deep-water 

 area of the Kerguelen Region. The proportion of genera to species in these twenty-nine 

 Stations is exactly the same as in the eight Stations in the Kerguelen Region, viz., as 1 

 to 1*46. These twenty-nine Stations are situated on an average about seventeen degrees 

 to the north of the mean latitude of the eight deep-water Stations in the Kerguelen 

 Region, and it will be observed that, while 301 species were obtained at the twenty-nine 

 Stations in the Southern Hemisphere outside the Kerguelen Region (or 10*4 species per 

 haul), 272 species were taken at the eight Stations in the Kerguelen Region (or 34 

 species per haul). 



An examination of the list shows that 19 of the species have received no specific 

 names, and there is besides one variety as well as the species to which it belongs. As in 

 the case of List I., and for reasons there stated, these must be deducted from the total 

 number, leaving 233 distinct fully-described species the distribution of which may be 

 discussed in detail. 



These 233 species may be divided into (1) those that are known to occur only in the 

 regions represented by these twenty-nine Stations ; and (2) those that are known to 

 occur in other regions situated northwards of the southern tropic. 



a. Species limited to the Southern Hemisphere south of the Tropic of Capricorn. 



In the first place we find that there are 165 species (or 65 per cent, of the total 

 number 1 of species and varieties found at these twenty-nine Stations) which, as far as we 

 know up to the present time, are limited in their distribution to regions south of the 



1 Not including the 48 species also occurring in the deep-water area of the Kerguelen Region (see footnote, p. 36). 

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



