814 



BULLETIN 56, UNITED STATES NATIONAL MUSEUM. 



Measurements of SI specimens of CaUospermophilus lateralis. 



Locality. 



Date. 



Sex and 

 age. 



Oo 



■as 





Flagstafl, Arizona 



do 



Near Flagatafl, Arizona . 

 do 



1886. 

 June 21 

 June 20 

 ...do... 

 ...do... 



.do ' July 22 



j 1887. 



May 23 

 ....do... 



...do... 

 ....do... 



May 26 



May 27 

 May 28 

 June 1 

 June 8 

 July 14 



....do.-, 

 July 31 



....do... 

 Aug. 1 

 Aug. 21 



1888. 

 Apr. 28 



Near Stonemans Lake, Arizona 



do 



do 



do 



Quaking Asp SetLlemeut, Mogollun 

 Mountains, Arizona. 



do 



Mormon Lake, central Arizona 



Near Flag.staff, Arizona 



San Francisco Mountain, Arizona.. 



Bakers Butte, Mogollon Moun- 

 tains, Arizona. 



do 



.do. 

 -do. 

 .do. 

 .do. 



.do. 



Vad. 

 ?ad. 

 9 ad. 

 9 ad. 

 9 ad. 



mm. 

 249 

 270 

 283 

 270 

 278 



276 

 290 

 281 

 281 

 278 



269 

 294 

 271 

 279 

 272 



280 

 269 

 278 

 270 



269 



mm. 

 75 

 SO 

 96 

 88 

 97 



103 

 101 i 

 96 

 102 

 105 



91 

 104 



95 

 101 

 104 



97 



mm. 

 40 



40 



mm. 

 15 

 16 

 14 

 14 

 16 



16 

 19 

 16 

 16 

 14 



16 

 17 

 13 

 16 

 18 



14.5 

 15 

 16 

 13 



13 



a American Museum of Natural History. 



b Mammse, 4 pairs. 



Genus OTOSPERMOPHILUS Brandt (1844). 



Otospermophilus Brandt, Bull. Classe Physico-math. de I'Acad. Imp. des Sci. de 

 St. Petersbourg, II, 1844, p. 379. (Species inc\\ided: SpermophUus gram- 

 murus, S. mexicanus, and S. lateralis.) — Baird, Mam. N. Am., 1857, p. 305. 

 (Eliminated /S. mencanus.)— Allen, Mon. N. Am. Eodentia, 1877, p 821. 

 (Eliminated S. lateralis, leaving S. grammurus the ty_pe. ) 



Characters. — Ears large, high, pointed (larger and more pointed 

 than in some species of Sciurus); tail long, full, and broad, with the 

 hairs two-thirds to three-fourths the length of the head and bodj^; gen- 

 eral form of the skull, and the dentition, strongly Sciurine. {J. A. 

 Allen.) 



