392 DR MURRAY ON THE DEEP AND SHALLOW-WATER MARINE FAUNA 



southern tropic. These 165 species are indicated in the list by an asterisk, and little 

 can be said about them beyond the fact that they are known only from the Southern 

 Hemisphere, and (with the exception of 16 species referred to later on — see List 11^.) 

 from depths over 1000 fathoms. 



LIST 11//. 



We enumerate here those species found at more than one of these Stations indicating 

 in brackets the number of Stations at which each species was taken. It will be observed 

 that the species limited to this area show a very restricted distribution within the 

 area itself, for only 9 species were each taken at two Stations, and 3 species each at 

 three Stations. 



Corallimorphus profundus (2). 

 Benthodytes mamillifera (2). 

 Cucumaria ahyssorum (3). 

 Paelopatides confundens (3). 

 Nothria ehlersi (2). 



„ pycnobrancltiata (2). 



Bairdia hirsuta (2). 

 Cyphocaris micronyx (2). 

 Sergestes profundus (2). 

 Bugula margaritifera (2). 

 Cellularia crateriformis (2). 

 Ghlorophthalmus gracilis (3). 



b. Species extending outside the area under 1 consideration. 



We come now to consider those species which have a wider distribution and extend 

 into the tropical and northern extra-tropical regions. The number of such species is 68 

 (or 27 per cent, of the total number 1 of species found at these twenty-nine Stations), and 

 for the purposes of this discussion they may be divided into groups in accordance with 

 their distribution. Thus we find that of these 68 species, 



25 species (or 37 per cent.) are known to occur in regions within the tropics, but not 



north of the tropical zone (List lie.) ; 



19 species (or 28 per cent.) are known to occur to the north of the tropics, but not within 



the intervening tropical zone (List \ld.) ; and 



24 species (or 35 per cent.) are known to occur both within and to the north of the 



tropics, some of which may for the present be regarded 

 as almost cosmopolitan (List He.). 



We may now proceed to consider in detail the distribution of these 68 species 

 according to the groups given above, indicating briefly the geographical and batby- 

 metrical distribution of each species northward of the tropic of Capricorn. 



LIST II, 



In the first place we give a list of the 25 species which extend within the tropics, but 

 are unknown up to the present time to the north of the tropic of Cancer. From the 



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



