cuscus. 91 



(skull of W. 46) Lave only one small premolar in the 

 right lower jaw ; three , viz : N«. 54 (skull of N". 3) , N». 63 

 (skull of N^ 14) and N». 76 (skull of N". 29) have only 

 a single small premolar in the left lower jaw; one, viz: 

 N*'. 74 (skull of No. 2G) has three small premolars in the 

 left lower jaw; one, viz: N». 80 (skull of N". 34) has 

 three small premolars in the right lower jaw ; two , viz : 

 m 81 (skull of W. 35) and N". 82 (skull of N°. 37) have 

 three small premolars in each lower jaw; in two , viz: N**. 56 

 (skull of W. 6) and N^ 61 (skull of N». 11) the hind- 

 most incisor of the right upper jaw is wanting; finally in 

 N'^. 63 (skull of N". 14) five of the upper incisors are 

 wanting (see above as to the lower jaws of this skull). In 

 the skull of a skeleton (N". 153) of a nearly fullgrown 

 individual there is in the right upper jaw no trace of the 

 small premolar. 



An adult skeleton (N°. 8) belonging to a specimen of 

 Cuscus ur sinus and presented to our Museum by the Gro- 

 ningen-Museum has only one small premolar in each lo- 

 wer jaw. 



Our skulls of Cuscus celebensis present no peculiarities 

 or abnormalities. 



Two of the species, Cuscus ursinus and Cuscus celeben- 

 sis are exclusively restricted to Celebes , perhaps solely to 

 the northern part of that island , meanwhile the two other 

 species have a very wide geographical distribution : Cuscus 

 or'ientalis has been met with from Timor to the Salomon- 

 islands and New-Zealand (if Gray's statements are to be 

 trusted) and from Morotai to the Arou-islands and New- 

 Guinea; Cuscus maculatus from the Saleyer-islands to the 

 Echiquier- group and Dufour-island and from Waigeou to 

 the northern part of Australia , Cape York and neighbor- 

 hood. Cuscus orientalis and Cuscus maculatus hitherto have 

 not been found in Celebes. The Group of flalmahera seems 

 to be only inhabited by Cuscus orientalis , like Timor and 

 Banda. Further investigations must make out how far the 

 here and below given oversight of the geographical dis- 



J^otes from th.e Leyden JMiiseuiix, Vol. "VII. 



