MAMMALS OF THE MEXICAN BOl NU\in 



I.V.» 



whitish. Feel dull soiled white: ears large, thinly haired, brown externally, yellowish 

 brown internally. 'Pail long, distinctly bicolor, the upper third dull brown, (he resl soiled 



grayish white, covered with line short hairs, which form a slight pencil at tip. 



The young are darker with less Fulvous. 



Ill the new full coat the fulvous tint is stronger, the lateral line broader and brighter, and 

 the lower surface white!'. In worn breeding pelage the tints are all paler. 



Measurements. Type specimen, J ad.: total length, 156; tail vertebrae, 89; hind foot, 

 1!): ear ifn.ni skim. L2. 



(i mail's . . 

 a females 



r.engl h. 



i:.s (142 

 152 (tin 156) 



Tail vertebrae. 



90 (84 100) 



Eindfoot. 



l'i ( IS 

 is.:, i L6? 19) 



(Bull. Am. Mus. Nat. Hist.. VIII, 1896, p. 235. i 



REITHRODONTOMYS FULVESCENS Allen. 

 SONORAN HARVEST-MOTJSE. 



Reiihrodontomys mexLcanus fvlvescens Allen, Bull. Am. Mus. Nat. Hist., VI, p. 319, 

 Nov. 7, 1894 (original description). 



Reithrodontomys fvlvescens, Allen, Bull. Am. Mus. Nat. Hist., VII. p. L38, May 21, 

 1895, (10 miles south of Oposura, Sonora, Mexico) ; VII, Art. VI, June 29, 1895, 

 p. 235.— Miller and Rehn, Proc. Bust, Soc. Nat. Hist., XXX, No. 1. Dec. 27, 

 1901, p. 96 (Syst. Results Study X. Am. Mam. to close of 1900). 



R[eithrodontomys] m[exicanus] fvlvescens, Elliot, Field Col. Mus., Zool. Ser., IV. L904, 

 pp. 257 and 264 (Mam. Mid. Am.). 



Type-locality.— Ten mil<\s south of Oposura, Sonora, Mexico, in the 

 valley of the Yaqui River. (Typo, skin and skull, in the American 

 Museum of Natural History, New York.) 



Geographical range. — Basin of the Yaqui River. Sonora, Mexico. 

 Lower Sonoran (and Tropical?) Zone. 



The following is the original description: 



Description. — Above yellowish brown, more or le^s heavily lined with black; a bright, 

 strongly marked fulvous lateral line: below whitish, the basal two-thirds of the pelage 

 plumbeous; cars dusky externally, rusty within, well clothed with line short hairs; tail 

 indistinctly bicolor, pale brown above, lighter below, sparsely haired, hut the hairs pretty 

 thoroughly concealing the annulations; feet soiled white, heels sparsely covered as far as 

 the Srs< tubercle with line short hairs. 



Measurements. Total length (type). 183 mm.: tail vertebrae, 102; hind foot, 1!': ear, 14. 

 Average of three adults (2 males, 1 female): Total length, 172: tail vertebra, 99; hind toot. 

 1«».:; ; ear, 1 1.7. (Hull. Am. Mus. Nat. Hist., VI, L894, p. 319. 



This [species] is represented by three adult specimens taken by Mr. 

 B. C. Condi! ;>t Oposura, Sonora, May 31 and June l. L894. 



REITHRODONTOMYS ARIZONENSIS Allen. 

 CHIRICAHUA MOUNTAIN HARVEST-MOUSE, 



Reiihrodontomys arizonensis Allen, Bull. Am. Mus. Nat Hist., VII, p. 134, May 21, 

 1895 (original description;; VII, p. 235, June 29, 1895 (Rock Creek, Chiricahua 

 Mountains, altitude about 8,000feet). Miller and Rehn, Proc. Bost. Soc, Nat. 



