CHARACTERS OF THE PROCYONID^. 



397 



the infranarial portion comparatively shallow. There is a faint 

 median groove marking the rhinarium from its summit to the 

 bottom of the philtrum. 



In Nasua the snout is much more elongated and mobile than in 

 Procyon, and, as in that genus, the upper lip is entire, the rhina- 

 rium showing no trace of philtrum. The rhinarium differs from 

 that of the other genera in certain particulars. Its upper anterior 



Text -figure 3. 



A. Rhinarium of Ailurus fulgens ; front view. 

 B- „ Potos caudivolvulus ; front view. 



C. „ Sassarieyon sp. ? ; front view. 



•D. .) Bassariscus astntus ; front view. 



E. „ Nasua nasua ; front view. 



F. „ Procyon lotor ; front view. 



All figures X J approx. 

 (D, E, P. Drawn with upper lip in same plane as anterior surface of rhinarium.) 



margin is strongly produced. Its greatest width in front across 

 the infranarial portions is less than the combined heights of the 

 rhinarium and of the upper lip. The inferior edge is commonly 

 strongly sinuous, owing to the median emargination. The nostrils 



27* 



