OF THE KERGUELEN REGION OF THE GREAT SOUTHERN OCEAN. 485 



Of the 325 genera represented, 



25 genera are known only from this region, and other 

 2 genera are known only from other regions south of the tropics. 



Over 100 additional species from sources other tlian the Challenger expedition are 

 enumerated from the Kerguelen Region, but some of them require verification. 



There are 90 identical species of Metazoa referred to in the paper as occurring in 

 the extra-tropical regions of the northern and southern hemispheres unrecorded from the 

 intervening tropical zone, and over 50 cases of closely-allied species occurring in the 

 ext1:'a-tropical regions of the northern and southern hemispheres separated by the 

 intervening tropics. 



In the deposits collected by the Challenger at six deep-water stations and three 

 shallow- water localities in the Kerguelen Region, 



220 species of Foraminifera were observed ; there are 

 206 distinct fully-described species, of which 



179 species are known from regions both south of, within, and north of the tropics, 

 16 species are known from regions both south and north of (but not within) the tropics, 

 7 species are known from regions both south of and within (l>ut not north of) the 



tropics, and 

 4 species are known only from regions south of the tropics. 



The wide geographical distribution of these Protozoa is thus in marked contrast to 

 that of the Metazoa previously considered, and the majority have also a great range 

 in depth, for 



178 species occur both above and below the 1000 fathoms line, wliile 

 14 species occur only in deep water over 1000 fathoms, and 



14 species occur only in depths less than 1000 fathoms, of which 6 species occur only 

 in shallow water under 150 fathoms. 



In the deposit collected by the Challenger at Station 157, 1950 fathoms, in the 

 deep-water area of the Kerguelen Region, 



8 1 species of Radiolaria were observed, of whicli 



57 species are recorded only from this place, the other 



24 species extending into other regions of the ocean, viz. : 



22 species are known from other regions both south of and within the tropics, 



1 species occurs in other regions only south of the tropics, and 



1 species occurs in other regions only north of the tropics. 



