96 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Se«. 



"Neotoma Mexicana" (probably part), Cooper, Amer. Nat., 

 3, 1869, p. 184 (Cajon Pass). 



Specimen examined, — One: No. 145270, U. S. Nat. Mus. ; 

 obverse of label ''Neotoma (Bairdii J. G. C. [plus an unde- 

 cipherable notation] ) San Diego Cal. May 1st 62 J. G. C." ; 

 reverse, ten measurements. 



Specimen stuffed with cotton ; skull inside ; fore feet folded 

 back on breast; hind feet crossed behind body; bones left in 

 tail, which points straight out posteriorly. 



The condition of this specimen is not all that could be de- 

 sired for purposes of identification ; but it is evidently closer to 

 Neotoma intermedia intermedia than to Neotoma fuscipes 

 macrotis, which is the only other wood rat occurring in the 

 region. 



Neotoma intermedia desertorum Merriam 



"N\_eotoma^ Mexicana" (part), Cooper, Zoology, in 

 Cronise, The Natural Wealth of California, 1868, p. 444. 



"Neotoma mexicana B^i'ird" (part), Cooper, Proc. Cal. Acad. 

 Sci., 4, 1870, p. 74 (Colorado Valley). 



"f Neotoma Mexicana" (part). Cooper, Amer. Nat., 3, 1869, 

 p. 184 (Cajon Pass). 



"Neotoma Mexicana" (part). Cooper, Amer. Nat., 3, 1869, 

 p. 476 (Colorado Valley). 



Specimens examined. — Two: Nos. 5607, 5611, Univ. Calif. 

 Mus. Vert. Zool. No. 5607: obverse of label "217 Neotoma 

 mexicana 6 Ft. Mojave Coldo V Apr 29 '61, J G C"; reverse 

 "About half grown". No. 5611 : obverse of label "210 Neo- 

 toma mexicana 5 Ft. Mojave Col'do V Apr 27 '61 J. G. C"; 

 reverse "two thirds grown" and eleven measurements. 



These skins were identified by Major E. A. Goldman of the 

 U. S. Biological Survey. No. 5607 exemplifies a dark phase 

 of coloration not normal in specimens from the Colorado Val- 

 ley, though in a series of specimens collected in the vicinity of 

 the Desert of the Little Colorado River in Arizona by Goldman 

 in 1917 the darker phase predominates. The other specimen 

 (No. 5611) exemplifies the normal coloration. 



