320 DR. J. E. GRAY ON THE GENUS CUSCUS. [NoV. 12, 



Sect. IV. The nose of the skull rather produced, rounded. The an- 

 terior conical false grinders two on each side above, the anterior rather 

 larger, the hinder very small, cylindrical ; both near the other grinder, 

 and widely separated" from the canines. The forehead with a deep 

 concavity between the orbits. Ears naked within, extended beyond 

 the fur of the head. Fur on body and tail uniformly coloured, with 

 a dorsal streak. Cuscus. 



6. Cuscus oRiENTALis, Gray, P. Z. S. 1858, p. 104, t. 61. 

 Cuscus quoyii. Lesson in Quoy & Gaim. Voy. Uranie, Zool. t.56. 



f. 6. 



The male and female grey brown, with a distmct dorsal streak. 



Var. albina ? # L— 



Cuscus orient alls, Temm. & Gray. - J ^ j/v^V*'^ 



Males pure white, without any dorsal streak. ^ j^U/JAA'^^^ ^ 



Hah. Islands of Waigiou and Ceram. 



Mr. Wallace attached to the male species this observation, " the 

 claws, soles, and end of the tail nearly white ; eats leaves and 

 cocoa-nuts (young)." He calls the male C. orientalis. 



We have specimens of both sexes in the Museum ; a very young 

 and adult female from Waigiou, obtained from M. Verreaux in 1856 ; 

 and male and female, with two young from the pouch, from Waigiou, 

 and a male from Ceram, from Mr. Wallace, in 1859 and 1860. 



In the skull of the female the temporal ridges are separated from 

 one another by a wide flat band. 



Temminck, and other authors since his work, have described the 

 male of this animal as white, and the female as silver-grey with a black 

 dorsal streak ; but we have both sexes of the latter colour. Can the 

 white males be an albino variety, and confined to the male sex ? We 

 have two full-grown males of that colour, one obtained from Leyden 

 Museum, said to come from Amboyna, and another from M. Ver- 

 reaux, said to come from New Zealand ; they both have the small 

 hinder false grinders. 



7. Cuscus ORNATUS, Gray, P. Z. S. 1860, p. 1, pi. lxxiv. 



(male). 



Both sexes grey-brown, grisled, and marked with small white 

 spots and a distinct dorsal streak ; the ground-colour of the male is 

 yellowish-red, of the female dark grey-brown. 



Hab. Ternate and Batchian {Wallace). 



We have a male and three females in the British Museum, all from 

 Mr. Wallace — a male from Batchian in 1859, two adult and a young 

 female from Ternate, obtained in 1858 and 1859. 



In the British Museum there are two young specimens of the 

 genus which I am not able to determine with certainty. They are 

 both of a fulvous-brown colour, and without any streak on the 

 back . 



I 



