

CLASS I. MAMMALIA. 



Animals suckling the young, 



ORDER I. PRIMATES. 



Front-teeth formed for cutting : tusks one on each side in each 

 jaw: teats % r seated on the breast. 



1. Homo. Front-teeth 4 in each jaw, {d ac ed close toge- 



ther : canine-teeth placed close to and of equal length 

 with the rest: grinders obtuse* 



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



together: fore-feet palmate with- a membrane which 

 surrounds the body and gives the power of flight. 



ORDER II. FER^E. 



Front teeth generally 6 in each jaw, rather conic: canine-teeth 

 ene or more on each side in each jaw i grinders with conic 

 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 lower-ones from the grinders : 

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

 date : hind-fett placed at the extremity of the body, 

 and uniting into a fin. 



4. Can is. Front-teeth in the upper-jaw 6, the lateral- 



ones longer and distant, the intermediate-ones lobed ; 

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

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

 or more than in the other genera of this order. 



5. Felis. Front-teeth 6, the intermediate-ones equal i 



grinders 3 on each side : tongue armed with prickly 

 protuberances pointing backwards: claws retractile. 



6. Viverra. Front-teeth 6, rather acute: canine-teeth 



longer than the others: grinders more than 3 each 

 side : tongue smooth or prickly : body long and slen- 

 der : feet not webbed. 



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



ger than the others : grinders more than 3 each side : 

 tongue smooth : feet webbed. 



8. Ursus. 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 smaller-ones at their 

 a4 



