no 



other, and the hinder ones in each jaw rather smaller than the front 

 ones ; the front upper small, triangular ; the others are four-sided 

 and square, with four tubercles, the outer front tubercle of the 

 second tooth being rather larger than the rest, which are nearly 

 equal among themselves, and the front lower grinder has only one 

 larger tubercle iu the place of the two in the others (figs. 4, 5). 



This genus is very distinct from the other genera of Phalangistina, 

 in the elongated and depressed form of the tail, the formation of the 

 fore-feet, and especially in the disposition and form of the teeth, as 

 well as in the broad depressed skull . 



The following observations may assist in showing the value of 

 these characters. 



In Cuscus the fingers are rather longer than in Hepoona, and the 

 third or middle finger is the longest, the others becoming gradually 

 shorter on each side. 



