18 University of Califorma Publications in Zoology [Vou 1+ 
County; Adobe Station, Kern County (see Palmer, 1893, p. 362) ; 
Lerdo, Kern County; Poso, Kern County (see Palmer, 1893, p. 378) ; 
Lake Buena Vista, Kern County; Temblor (or Temploa) Mountains, 
on boundary between Kern and San Luis Obispo counties. The 
following additional stations of occurrence, ascertained by the Museum 
of Vertebrate Zoology, may now be added: Eight miles northeast of 
— 
e A.n nelsoni 
4 A.n. amplus 
Fig. 1.—San Joaquin Valley, California, with outlines of ranges of Ammo- 
spermophilus nelsoni amplus and Ammospermophilus nelsoni nelsoni. Dots 
represent localities where specimens have been collected. 
Bakersfield, Kern County; McKittrick, Kern County; and Carrizo 
Plains, seven miles southeast of Simmler, San Luis Obispo County. 
In 1912, Grinnell (MS) noted many antelope chipmunks in the 
Cuyama Valley, extreme southeastern San Luis Obispo County. 
General habits—Antelope chipmunks were found in abundance 
by our Museum party eight miles northeast of Bakersfield, where 
the animals preferred the open, exposed tracts covered chiefly with 
foxtail grass. They were noted also in Atriplex country both in the 
