CLASS I. MAMMALIA. 



Animals suckling the young* 



ORDER I. PRIMATES, 



Front-teeth 'formed "for cutting : luslcs one on each side t)l each 

 jaw: teats 2, seated on I he breast. 



1. HOMO. Front-i((:th4 in each jaw, placed close .tosT> 



ther: cqnine-tqitfi placed close to and of equal lenglh 

 with tlie rest: grinders obtuse. 



2. VESPErtMLio. Teeth all erect, pointed, placed close 



together : fore-feet palmate with a membrane which 

 surrounds the body and gives the powep of flight. 



ORDER II. 



Front teeth gtntralb) 6 t;i cachjenc, rather conic: canine-iceth 

 one or more on each aide in each jaw: grinders tcith cmitb 

 projections : feet armed' with sharp claws. . 



3. PHOCA. Front-teeth in the upper-jaw 6, the outer-ones 



larger; in the lower-jaw 4, more obtuse, and equal : 

 canine-teeth one each side in each jaw,, longer and 

 larger than the rest, the upper-ones distinct from the 

 . cutting teeth, the lo wee-ones from the grinders : 

 grinders 5 each side- above, 6 below, narrow, tricuspi- 

 datc: Idnd-fett pkced at the extremity of the body, 

 ,'md uniting'intd a fin, 



4. CANIS. . Front'teeth in the upper-jaw 6, the lateral- 



ones longer and distant, the inferined fate-ones lobed ; 

 in the lower-jaw 6, tha lateral -ones lobed : canine-teeth 

 one in each jaw each side, incurved : grinders 6 or 7, 

 or more than in the other genera of this order. 

 3. FELIS. Front-teeth 6, the intermedia terones equal: 

 grinders 3 on each side': tongice armed with prickly 

 protuberances pointing fyackMurds ~.cfaics retractile. 



6. YIVERRA. Frcni-Ueth 6, rather acute : caninc-tctth 

 - longer than the others : grinders more than 3 each 



side: tong ue smooth or j>rickly : body, long and" slen~ 

 der : feet not : webbed. 



7. LUTRA. Front-teeth 6, rather acute : canine-teeth lon- 



ger than the others : grinders more than 3 each *ide : 

 tongue smooth : feet webbed. 



8. (JRSUS. Front-teeth in the upper-jaw 6, hollowed 



within; in the lower-jaw 6, the two lateral-ones lon- 

 ger than the rest and lobed, with smalle'r-ones at their 



