210 MAMMALIA. 



Synopsis of Indian Genera. 



a. Digitigrade with retractile or partially retractile claws ; skull 

 with the condylar foramen confluent with the foramen lacerum 

 posterius ; the paroccipital process applied to the bulla ; 

 mastoid process obsolete ; last upper premolar and first lower 

 molar generally sectorial. [=Aeluroidea.] 



h. With only 2 lower premolars; no alisphenoid canal ; bulla 

 not externally constricted or internally divided ; metatarsus 

 hairy. [=Felidae.] 



c. Claws completely retractile ; inner cusp of upper sectorial 

 moderate. Felis, p. 212. 



c^. Claws incompletely retractile; inner cusp of upper sec- 

 torial rudimentary. Cynaelurus, p. 235. 



b^. With 3 lower premolars ; alisphenoid canal present (except 

 Viverricula) ; bulla externally constricted and internally 

 divided ; metatarsus hairy or naked. [= Viverridae.J 



d. Claws strongly curved and more or less retractile ; bulla 

 not posteriorly everted ; prescrotal glands present ; 

 anus not generally opening into a sac. 



e. Tarsus and metatarsus entirely hairy ; ears never 

 tufted. 



/". A second upper molar present. 



g. Alisphenoid canal present. Viverra, p. 235. 



g^. Alisphenoid canal absent. 



Viverricula, p. 238. 



p. No second upper molar. Prionodon, p. 239. 



e^. Tarsus and metatarsus half bald ; ears not tufted. 



h. Teeth small ; hinder part of the alveolar margin 

 of the mandible crested. 



Arctogale, p. 241. 



h^. Teeth large ; hinder border of mandible not 

 crested. Paradoxurus, p. 242. 



e^. Tarsus absolutely naked ; ears tufted ; tail prehensile. 



Arctictis, p. 249. 



(P. Claws elongated, not retractile ; bulla posteriorly everted ; 

 canines large ; no prescrotal glands ; anus opening 

 into a sac. Herpestes, p. 25c. 



