pectoral band yellowish gray, rest of under parts white: tail above 

 dusky, hairs tipped with 3'ellowish brown and gray, beneath white. 

 Ears grayish white on dorsal surface behind, and gray mixed with 

 yellowish brown and black in front, basal two-thirds of front edge 

 white, tips black. 



}rfasuiements. Average total length, 345; tail vertebra', 50.2; 

 hind foot, 83.4; ear from notch, 65.8. 



0. Brachylagus, 



Brachylagus. Miller, Proc. Biol. Soc. Wash., 1900, p. 157. 



Skull short and deep; audital bullae large; rostrum small; 

 supraorbital processes shorter than tooth row, their extremities free; 

 posterior prism of second lower premolar and first and second lower 

 molars less than half as large as anterior; ears, legs and tail short, 

 the latter not perfectly formed. (Miller.) 



433. idahoensis. {Lepus), Merr., N. Am. Faun., No. 5, i8gi, p. 75, 



fig. 4, p. 77. 



Type locality. Pahsimeroi Valley, Idaho. 



Gcogr. Distr. Sage Plains on Snake River, Idaho, and the 

 northward extensions of these plains. South into northern Nevada 

 and west into eastern Oregon and Washington. 



Genl. Char. Size small; ears and hind legs short; tail rudi- 

 mentary. 



Color. Winter Pelage. Above drab gray mixed with black; 

 thighs same color; nape ochraceous buff; sides drab gray; pectoral 

 band grayish buff; belly white; fore and hind feet ochraceous buff. 

 Ears buffy ochraceous mixed with gray and black, bordered in front 

 with a line of black. 



Summer Pelage. Drab gray above strongly suffused with buff and 

 mixed with black. 



Measurements. Total length, 290; tail, 15; hind foot, 71; ear 

 from notch, 42. 



D. Microlagus. 



" Ear longer than hind foot, tail short; skull narrow, low and 

 lightly ossified, with postorbital process usually free, scarcely touch- 

 ing cranium behind." (Mearns.) 



434. cinerascens. {Lepus), Allen, Bull. Am. Mus. Nat. Hist., iii, 



1890, p. 159. 

 Type locality. San Fernando, Los Angeles, California. 

 Geogr. Distr. Deserts of southern California. 

 Genl. Char. Similar to L. hachmani, but smaller and paler. 



