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



Guinea; John Macgillivray, 1851 ; and its skull, which agrees with 

 Temminck's figure of the skull of C. maculatus. 



6. ? An adult male, with numerous confluent reddish spots. New 

 Guinea; John Macgillivray, 1855. 



7. ? A half-grown male, with numerous small, reddish and dark- 

 brown spots, often confluent. Darnley Island, south coast of New 

 Guinea; John Macgillivray, 1855. 



I have not been able to examine the skull and teeth of these spe- 

 cimens ; so they may belong to the next. 



4, CUSCUS (S.) MACULATUS. 



Cuscus maculatus, Lesson, Voy. Coq. t. 5. 



Cuscus maculatus, var., nos. 3-7, Gray, P. Z. S. 1858, p. 102. 



Phalangista chrysorrhos, Temm. Mon. t. 1. f. 4, 5, 6 (skull, not 

 skin). 



Grinders moderate, three front forming a series of from 8| to 9 

 lines in length. Skull very convex on the front of the orbit, flat or 

 slightly concave behind the convexity, the temporal ridges close toge- 

 ther, united (in the adult skull) and forming a sharp ridge. 



"White, spotted with fulvous grey-brown or black ; forehead 

 reddish. 



Hab. New Guinea. Waygeroo and Aru Islands. 



There are both sexes in the Museum Collection. 



1 . Adult male. Spots on the head and shoulders, confluent on the 

 back and sides, small, scattered ; tail white. Waygeroo. Purchased 

 of M. Verreaux, 1856, as Cuscus maculatus. 



2. Adult male. White, with numerous, scattered, small spots ; tail 

 white, slightly varied with pale reddish, Aru Island ; Mr. Wal- 

 lace, 1857. This belongs to the smaller-toothed kind. 



3. Adult male and female. Very similar ; yellowish white spots, nu- 

 merous, smooth, intense black ; head reddish-brown ; tail white, 

 marbled with pale reddish. Waygeroo (Mr. Wallace, 1860). 



Mr. Wallace observes that these animals are diurnal : the female 

 he marks as having a pale hazel iris. The skull of the male shows 

 that it also belongs to the smaller-toothed kind. 



The three skulls in the Museum agree with the above description, 

 but vary among themselves ; one of the skulls from Aru ( 1 1 95 b) is 

 much narrower in all its parts, and is less swollen and narrower be- 

 tween the orbits, than the others from the same locality, and is pro- 

 bably the skull of a female, as 1195« is from the male specimen 

 sent from Aru by Mr. Wallace. 



The skull of the male specimen sent by Mr. Wallace from Way- 

 geroo is similar to the male from Aru (1195 a), but is rather more 

 swollen, especially between the front of the orbits. 



Sect. III. The nose of the skull rather produced, rounded. Tlie 

 anterior conical false grinders one on each side above, moderate-sized, 

 near the middle of the broad diastema. The forehead deejdy concave, 

 with a raised edge on each side between the orbits. Ears naked 



