SYNAPTOMYS. DIPODOMYS ERETHIZON. 131 



Color. " Upper parts rich brown, back and head dull russet, 

 very thickly set with black tipped hairs, rump and flanks shading 

 decidedly toward hazel and with fewer black tipped hairs; long hair 

 on ears, and in front of and behind ears hazel; patches at base of 

 whiskers, meeting across nose, dull hazel. Under parts dull smoke 

 gray; under fur slate color; feet and hands dusky; tail dusky above, 

 grayish below." 



Measurements. "Total length, 120; tail vertebra;, 22; hind foot, 

 21." (Bangs 1. c.) 



Fam. VI. Heteromyidae. 



Sub. Fam. I. Dipodomyinae. 

 () 1 . Dipodomys. 



355. Dipodomys montanus. Baird, Acad. Nat. Scien. Phil., 1855, 



p. 334. (I'ort Massachusetts, N. M.) Mearns, Proc. Biol. 

 Soc. Wash., 1900, p. 167. 

 Dipodomys ordi var montanus. Baird, Mamm. N. Am., 1857, pp. 



410, 411. (nee Waterhouse.) 

 Dipodomys elator. Merr. , Proc. Biol. Soc. Wash., 1894, p. 109. 

 Dr. Mearns has stated (1. c.) that a comparison made between 

 Baird's types of D. montanus in the National Museum with that of 

 Merriam's D. elator proves them to be identical, which fact reduces 

 the latter to the rank of a synonym. Baird's name must be employed 

 for the species. 



356. a. Dipodomys cali/ornieus pallidulus. Bangs, Proc. N. Eng. 



Zool. Club, 1899, p. 65. 



Type locality. Sites, Colusa County, California. 



Genl. C/iar. Like D. californiius^ but paler; thigh patches not 

 dusky, black markings at base of whiskers and over nose nearly 

 wanting. 



Color. Above wood brown, shading to cinnamon on sides; patch 

 behind ear and over eye white. Tail above sepia, beneath white. 

 Under parts of body white. 



Measurements. " Total length, 290; tail vertebra , i.">i ; hind foot, 

 42; ear, 15." (Bang, 1. c.) 



Fam. VII. Eretliixontidae. 



Sub. Fam. I. Erethizontinae. 



07. Erethizoii. 



404. a. Erethizon dorsatiis picinus. Bangs, Proc. New Eng. Zool. 

 Club, 1900, II, p. 37. 

 Type locality. Lance au Loup, Labrador. 



