1861.] DR. J. E. GRAY ON THE GENUS CUSCUS. 317 



description of either species the difference in the size of the grinders, 

 though he shows the difference in his figures. 



The second species has smaller grinders, placed in the same man- 

 ner as the former, — the three front grinders forming a series of from 

 8^ to 9 lines in length, as they are figured by Temminck (Monog. 

 t, 1. f. 4-6) as Phalangista chrysorrhos. 



We have two skulls with their skins belonging to this kind ; and 

 both have the spotted skins which Temminck calls Phalangista ma- 

 culata. Under these circumstances it is difficult to adopt Tem- 

 minck's name. Are we to take those of the skin or those of the 

 skulls ? Perhaps what he describes as C chrysorrhos may be the 

 proper and wild state of each species, and the spotted varieties de- 

 scribed as C. maculata may be albino varieties or half-domesticated 

 varieties of them, for the natives of some islands are said to breed 

 them. 



As I have not the power of examining the skulls of all the speci- 

 mens, I have arranged those in the Museum provisionally under 

 these two names, taking them as they designate the general colour 

 of the fur. 



3. CuSCUS (S.) CHRYSORRHOS. 



Ouscus maculata, var. 1, 2, Gray, P. Z. S. 1858, p. 102. 



Phalangista maculata, Temm. Mam. t. 2.f. 1-5 (adult), 6 (young 

 skull). 



The grinders* large, three front of from 10 to \0\ lines in length. 



Fur dark grey-brown ; sides and middle of the back blacker or 

 black ; face reddish ; rump and tail yellowish ; belly white. 



Var. albinal 



White ; feet and large spots on back red-brown. 



Hab. Ceram ; south coast of New Guinea ; " Moluccas " (Temm.). 



1. An adult female of a large size from the Leyden Museum as C. 

 chrysorrhos, Temm. 1859. 



2, 3. An adult and a three-fourths grown female, with the sides 

 very deep black. From Ceram ; Mr. Wallace, 1859. 



4. A young female specimen from the south coast of New Guinea ; 

 J. B. Jukes, 1846. 



The skull of this animal shows that it belongs to the large-toothed 

 species. 



Var. ? albina. White, reddish varied. 



C. maculata, nos. 3-5, Gray, P. Z. S. 1858, p. 102. 



5. White, with a long irregular patch on the back, and the four 

 feet red. A female from Dufour Island, south-east coast of New 



* I give the measurement of the three first of the true grinders only, because 

 in the young skull the hindermost grinders are not developed. I may state 

 that the difference in the size of the grinders does not depend on the sex of the 

 species, as there are both males and females with teeth of each size. 



