Mcrriam — N'etv Kangaroo R<(ts. 115 



Perodipus ordi columbianus subsp. nov. 



Tt/pe from Umatilla, Plains of Columbia, Ouegon. No. I'Hyl $ ad. U. 

 B.Nat. Maseum. Department of A<^riciilLure Collection. Collected Oct. 18, 

 1890, by Clark 1*. Streator (Oriiiinal number IJ.Sd). 



Measuremcats (taken in flesh). — Ti/pt': Total len<rth 2.")4 ; tail vertel)r;L' 148 ; 

 hind foot 40. Ear from anterior base 13 (in dry .skin). 



J/'f/vir/c measurements of 15 specimens irom type locality: Total lenjith 

 244.5 ; tail vertebne 140.5 ; hind foot 3t). 



Gencrol climutctcrs. — Similar to P. onJi but less ochniceoiis in 

 color and with markings more pronounced; ears blackish instead 

 of flesh color; supraorbital white spots more conspicuous. 



Color. — Upper parts clay-color, tinely mixed with dark-tipped hairs ; 

 thigh patches large, more tinged with ochraceoas than rest of upper parts, 

 this color reaching down on inner side of leg in a narrow stripe to heel [no 

 dusky on inner side of leg] ; facial crescents blackish and nearly continuous 

 with a blackish spot on end of nose ; supraorbital white spots unusually 

 conspicuous; interior of ear conch and refiexed upper border blackish; 

 back side of ear v^hitish ; dorsal and ventral tail stripes dusky, the ventral - 

 failing or nearly faihug on terminal fourth, wiiere the white sides stripes 

 commonly meet or nearly meet for a short distance; tip of tail dusky all 

 round from upper stripe. 



Cranial characters. — The skull of columbianus differs from that of typical 

 ordi in having the basioccipital much broader, the postero-external angle of 

 the maxillary wing of the zygoma more strongly produced backward and 

 downward and the angle of the mandible larger. 



