Specimens examined.—Total, 122, distributed as follows:

Utah: Garfield County: Mouth of Calf Creek, Escalante River, 3 (BYU); Ten Mile Spring, 3 (BYU); Escalante, 3 (BYU). Washington County: near Short Creek road, south of town of Virgin, 18 (RH). Kane County: near Paria, 1 (UU); Willow Tank Springs, 7 (BYU); 8 mi. NW Kanab, 4800 ft., 1 (UU); near Sand Dunes, 7 (RH); Kanab, 15 (12 MVZ; 2 BYU; 1 UU); 1 mi. S Kanab, 4400 ft., 2 (UU).

Arizona: Mohave County: near S Boundary Kaibab Indian Reservation, 4 (MVZ); 6 mi. N Wolf Hole, 8 (MVZ); 4 mi. N Wolf Hole; 3 mi. NW Diamond Butte, 7 (USBS); 20 mi. S Wolf Hole, 1 (USBS); 1 mi. W Diamond Butte, 1 (USBS); 6 mi. N Mt. Trumbull, 1 (USBS); Nixon Springs, 6250 ft., W Base Mt. Trumbull, 6 (3 USBS; 3 MVZ); 5 mi. S Trumbull Spring, 1 (USBS). Coconino County: Fredonia, 3 (USBS); 2 mi. W Lees Ferry, 3 (MVZ); Jacobs Pools, 4000 ft., Houserock Valley, 15 (MVZ); 10 mi. S Jacobs Pools, Houserock Valley, 2 (MVZ); Houserock Valley, 10 (USBS).

Dipodomys ordii palmeri (Allen)

Dipodops ordii palmeri Allen, Bull. Mus. Comp. Zool., 8:187, 1881.

Cricetodipus ordii palmeri, Trouessart, Catalogus Mammalium, 1:581, 1897.

Perodipus ordii palmeri, [Goldman], Proc. Biol. Soc. Washington, 30:113, May 23, 1917.

Dipodomys ordii palmeri, [Grinnell], Journ. Mamm., 2:96, May 2, 1921.

Cotypes.—Two males, adults, nos. 5886 and 5887, Mus. Comp. Zool.; San Luis Potosí, Mexico; obtained on May 1, 1878, and September 1, 1878, respectively, by Dr. Edward Palmer. (Types not seen.)

Range.—Eastern Zacatecas, Aguascaliente, northern Jalisco, San Luis Potosí, Hidalgo, and probably Querétaro; marginal occurrences are: Zacatecas, Canitas and Berriozobal; Aguascaliente, 1 mi. N Chicalote; Jalisco, 9 mi. N Encarnación; Guanajuato, Celaya; Hidalgo, Irolo.