254. PHALANGISTIDiE. 



a space about equal to their diameter ; they are nar- 

 row at the base, and expanded and somewhat com- 

 pressed above tne base. The next incisor on each 

 side is larger than the last or posterior one^ and about 

 half the height of the firsts narrow at the base, and 

 wide and truncated at the apex. The third incisor 

 is small and but slightly wider at the tip than at the 

 base. The canine is very small and conical. The 

 first false molar is minute and conical, separated by 

 a considerable space from the canine and also from 

 the molars, and has but one fang. The next two 

 false molars have two fangs ; they are broad at the 

 base and compressed at the tip ; the foremost presents 

 an anterior larger, and a posterior small compressed 

 tubercle ; the third is divided at the tip into three 

 compressed points. The true molars are nearly 

 squa,re, but rather longer than broad ; the crown of 

 each, with the exception of the last, presents four 

 angular tubercles. In the last molar there are but 

 three of these tubercles, two in front and one behind. 

 The incisors of the lower jaw are large, nearly cylin- 

 drical at the base ; beyond this, they are somewhat 

 dilated, flattened, pointed, and have two sharp edges. 

 There are no minute detached false molars in the 

 lower jaw. The single false molar on each side is 

 placed close to the true molars, compressed in front 

 and expanded behind ; a small anterior tubercle is 

 separated from the body of the tooth by a slight 

 transverse incision. The true molars resemble those 

 of the npper jaw, excepting that they are narrower, 

 and the last molar has four tubercles instead of three; 



