144 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.49. 



dog-like premolars and molars, the rounded canines, and the evident 

 though small secondary lobes on the incisors (particularly noticeable 

 in B. sumichrasti, which has been made the type of a separate sub- 

 genus "J^Tji-inHa") all show unmistakable characters of the teeth 

 of the Canidse. It seems necessary, therefore, to place them in a 

 separate family, as was done by Gray in 1869^ and by Gill in 1872. ^ 

 The arrangement of the superspecilic groups usually placed in the 

 Procyonidse would be then: 



Family BASSARISCIDiE. 



1. BASSARISCUS Coues. 



(syn., JeniinHa Trouessart.) 

 Family PROCYONID^. 



1. AILURUS Geoffrey and Cuvier. 



2. PROCYON Storr. 



a. ETTPROCYON Gray. 



b. PROCYON. 



3. NASUA Storr. 



4. NASUELLA, new. 



5. BASSARICYON Allen. 



6. POTOS Geoffroy and Cuvier. 



The genera and subgenera of the family Procyonidse may be diag- 

 nosed as foUows: 



Genus AILURUS Geoffroy and Cuvier. 



1825. Ailurus Geoffroy and Cuvier, Hist. Nat. Mamm., vol. 5, livr. 50, text 



panda, p. 3. June. 

 1841. Arctaelurns Gloger, Gemeinn. Hand- und Hilfeb. Naturg., vol. 1, pp., 



xxviii and 55 (1842). 

 1846. Aelurus Agassiz, Nomencl. Zool., Index, p. 9. 



Type. — [Ailurus] fulgens Geoffroy and Cuvier. 



Characters. — Face short, head roundish; ears large, erect, pointed; 

 tail long, nonprehensile; claws semiretractile; sole of foot almost 

 entirely haired; os penis small (23 mm. in length), not bilobed an- 

 teriorly. 



Skull short, high, and rounded; rostrum short; braincase high and 

 narrow, interorbital constriction comparatively great; zygomata 

 without distinct postorbital processes; sagittal crest well developed. 

 Palate liigldy arched, grooved medially, and extending only little 

 beyond plane of last molar; vomer not attached to palatal bones; 

 alisphenoid canal present; foramen ovale large; postglenoid process 

 heavy, high, and greatly arched forward; audital bullge very small, 

 inflated only on inner side, the external auditory meatus a long and 



1 Bassaridae, Gray, Cat. cam., pachyd., and edent. mamm., p. 246. 1869. 

 « Bassaridid*, (iill, Smiths. Misc. Coll., No. 230, p. 7, 59, 07. 1872. 



