54 NOKTU AMERICAN FAUNA 60, FISH AND WILDLIFE SERVICE 



Durango: Raiioho Santuario (northwestorn Durango), 1 (skull only).-'' 



Nayarit: Acaponota, 1. 



New Mexico: Alcalde, 7 (skulls only); Central, Grant County, 1 (skull only); 



Chloride, I; Deining, 1; Gila National Forest, 2 (skulls only); Magdalena 



Mountains, 1; R(>drock, 1; Rinconada, 1; Santa Rosa, 2; V<^larfle, 8 (skulls 



only). 

 Sinaloa: Mscuinapa, 47 (12 skins without skulls; 10 skulls without skins); -^Mazat^ 



Ian, 2; Rosario, 1. 

 Sonora: "N. Sonora, Liunholtz Expedition", 1 (skin only); -■' Oputo, 2. 

 Texas: VA Paso, 1 (skull only). 



PROCYON LOTOR PALLIDUS Merriam 

 Colorado Desert Raccoon 



Procyon pallidus Merriam, Biol. Soc. Washington Proc. 13: 151, June 13, 1900. 



Procyon lotor ochraceus Mearns, Biol. Soc. Washington Proc. 27: 64, Mar. 20, 

 1914. Type from Sonoyta River, Sonora, Mexico, near Quitobaquito, 

 Pima Co., Ariz., No. 59900, male subadult, U. S. Natl. Mus.; collected by 

 Edgar A. Mearns, February 7, 1894. 



Type locality. — Now River, Colorado Desert, Imperial County, 

 Calif. 



Type.—^o. 99272, female adult, skin and skull, United States 

 National Museum (Biological Surveys collection) ; collected by Frank 

 Stephens, October 16, 1899. 



Distribution. — Colorado and Gila River Valleys and adjoining 

 territory from the delta north to northeastern Utah, and east to 

 western Colorado and northwestern New Mexico. Mainly Lower 

 Sonoran division of Lower Austral Zone, but ranging up along streams 

 into Transition Zone. 



General characters. — One of the palest subspecies of the group; 

 skull with narrow frontal area highly arched behind plane of postorbi- 

 tal processes. Color and general size about as in P. I. mexicanus of 

 Chihtuihua, but skull usimlly narrower, especially between orbits, 

 and difl'eri ng in other slight details. Decidedly paler, more ashy 

 gray than P. I. psora of the Sacramento Valley; skull with upper 

 outline rising more prominently behind plane of postorbital processes. 

 Similar to P. I. (jrlnncUu but slightly paler, and cranial characters, 

 especially the more abruptly sloping frontal profile from apex behind 

 plane of postorbital processes, distinctive. 



Color. — About as in P. I. mexicanus. 



Cranial characters. — Skull closely resembles those of P. I. mexicanus 

 and P. I. psora but brain case, frontal area and palatal shelf usually 

 narrower; frontals high behind posterior plane of postorbital processes 

 as in mexicanus (flatter and rising less prominently in psora) ; tooth 



Amer. Mus. Nat. Uist. 



