Vol. IX] TAYLOR— COOPER'S MAMMALS 101 



Specimen examined. — One: No. 5647, Univ. Calif. Mus. 

 Vert. Zool.; obverse of label "755 Mus rattus, L-Black Rat 

 [printed slip pasted on] San Diego Cal 9 Feb 7th '62 J. G. 

 C." ; reverse, eleven measurements. 



The specimen is prepared as usual, skull inside, hind feet 

 sticking out behind, fore feet folded back on breast; tail not 

 skinned out, turned so as to lie along back. 



This animal is a pure albino ; the size of its ears, length of its 

 tail, and character of its teeth shows it to belong to the rattus 

 series rather than to norz'cgicus. 



Thomomys bottae bottae (Eydoux & Gervais) 



"Thomomys htilhivorus" (part). Cooper, Zoology in 

 Cronise, The Natural Wealth of California, 1868, pp. 445-446 

 (Middle counties near the coast). 



"T{homomys'\ umhrinus" (part). Cooper, same, p. 446 

 ("found in the southeast quarter [of the state]") ; Amer. Nat., 

 3, 1869, p. 183 (Southern part of California). 



"Thomomys bulbivoriis Rich." (part). Cooper, Proc. Cal. 

 Acad. Sci., 4, 1870, pp. 63, 69 (Peculiar to California; not 

 known to occur north of the Middle and North Coast Ranges). 



"Thomomys umbrinus Rich." (part), Cooper, same, p. 68 

 (Does not extend north of the southern coast slope). 



Specimens examined. — Seven: Nos. 5613-5617, Univ. Calif. 

 Mus. Vert. Zool.; Nos. 11933, 145271, U. S. Nat. Mus. No. 

 5613 : obverse of label "Thomomys bulbivorus San Mateo Cal. 

 Mch 10 '63 J. G. C." ; reverse, eight measurements. No. 5614 : 

 obverse of label "Thomomys bulbivorus — California Gopher — 

 [printed strips pasted on] San Mateo Cal. Mch. 7, '63 J. G. 

 C." ; reverse, eleven measurements. No. 5615 : obverse of label 

 "Thomomys talpoides bulbiv Santa Cruz Mts. Cal. 20th May 

 1864 J. G. C"; reverse, nine measurements and the word 

 "young?"; the "talpoides bulbiv" portion of the scientific name 

 was evidently pencilled in subsequent to the writing of the rest 

 of the label. No. 5616 : obverse of label "Thomomys umbrinus 

 [printed strip pasted on] Drum Bks. Cal. Oct. '65 Sonora 

 Gopher [printed slip containing name pasted on] J. G. C." No. 

 5617: obverse of label "Thomomys umbrinus Drum Bks. Cal. 

 Nov. '65, J. G. C." No. 11933 : original label missing; Saticoy, 



