On the Fishes taken hy the ' Oceana.^ 



37 



belly-colour, as in in'nitafis. Tail, apart from the furry 

 basal portion (which is like the back), wholly white, or with 

 a few inconspicuous dark marblings near its base. 



Dimensions of the type (measured on the skin) : — 



Head and body 210 mm.; tail 300; hind foot (s. u.) 32; 

 ear 32. 



Skull : greatest length 48 ; basal length 44 ; zygomatic 

 breadth 27*5 ; combined length of three anterior molariform 

 teeth 7-1. 



Hab. Maripa, Caura Valley, Lower Orinoco. 



Tijpe. Adult male. B.M. no. 4. 5. 7. 42. Original num- 

 ber 376. Collected 26th October, 1903, by Mr. S. M. Klages. 



This opossum agrees in size with the Trinidadian G. trini- 

 tatis and its Venezuelan relative C. t. venezuelce, and is there- 

 fore far smaller than the Guianan C. philander, L., to which, 

 however, it shows some affinity by its white tail, trinitatis 

 and venezuelce both having this organ brown, with at most a 

 few lighter marblings. Its short close fur will also distin- 

 guish it from its Venezuelan neighbour. 



VII. — On the Fishes taken by the ' Oceana.' * 

 By E. W. L. Holt and L. W. Byrne. 



Only six specimens of fish, all very young, were received 

 from the ' Oceana,'' viz. : — 



* For details of the voyage and of the method of capture see ' The 

 Geographical Journal,' vol, xiii. (1890) p. 1-17. 



