MAMMALS 



345 



Color lighter; russet brown above: Mon- 



color reddish 



C. c. frondaior Mearns. 

 tana to Mexico. 



C. c. pacificus Rhoads. Size large; length 1143 ^^^ 

 chestnut: Pacific slope from California to Alaska. 



C. c. michiganensis Bailey. Colors very dark; ears and feet black; 

 length I, 175 rhm.; tail 475 mm.; hind 

 foot 185 mm.; weight about 58 lbs: 

 Upper Peninsula, Michigan. 



C. c. missouriensis Bailey. Col- 

 ors paler; size smaller: Missouri River 

 drainage from Nebraska to Montana. 



C. suhauratus Taylor. Size very 

 large; length 1171 mm.; color hazel 

 and gray with a golden sheen: San 

 Joaquin County, California. 



Family 9. Leporidae. — Rabbits 

 and hares. Large rodents with 4 

 upper incisors (Fig. 183), a large pair 

 in front and a small pair immediately 

 behind them; upper lip divided; 

 front legs short, with 5 toes; hind 

 legs very long and with 4 toes; tail 

 rudimentary; ears very long; denti- 

 tion 2/1, 0/0, 3/2, 3/3: 5. genera 

 and about 70 species, found through- 

 out the world; 3 genera and 16 

 species and many subspecies in the 

 United States. The American rab- 

 bits and hares (with the exception 

 of Brachylagus idahoensis) do not Fig. 183.— Skuii of z,e/>H5 (/row e/z/oO. 

 burrow as do their European relatives, but frequently make their nests 

 in holes in the ground. 



Key to the Genera of Leporidae 



ai Size large; hind foot over 125 mm. long i. Lepiis. 



a2 Size small; hind foot about 90 mm. long 2. Sylvilagus. 



as Size very small; hind foot about 70 mm. long 3. Brachylagus. 



I. Lepus L. Size large; ears and hind legs very long; no inter- 

 parietal bone in the adult; third to fifth ribs broad and flattened: 

 circumpolar; 7,2 species and subspecies in America, and 20 in the 



