E.V. Miller 1940 Perognathus veloxii April 14 36 mi. ESE of Monterrey, Nuevo Leon. Took one immature ♀ (no embryos) in trap baited with oatmeal and birdseed, and set on rocky ground covered with a medium thick growth of thorny brush about 8 ft. in height. Country mostly flat with a few low hills. May 13 1900 m. 9 mi. N Encarnacion de Diaz, Jalisco. Took 4 ♀ of this species along edge of an old corn field. Small rocks present in the soil. Brush and small trees and dried grass present at edge of field - May 16 1900 m. 1 mi. N Chicalote, Aguascalientes. Took 3 ♂, 3 ♀ (one with 4 embryos) in traps set along a low bank near nopel cactus, low brush, and small trees. May 19 2 mi. NW San Luis Potosi, San Luis Potosi. Took one male along the sandy bank of a dry gulch, near brush and grass. May 20 1 mi. W Hacienda la Parada, 20 mi. NW San Luis Potosi, San Luis Potosi. Took 4 ♂, 4 ♀ of this species in traps set on rocky soil, low hills covered with brush and cacti to medium thickness. May 23 Potrero Santa Ana, ni. 5 Matehuala, San Luis Potosi. Took 2 ♂, 1 ♀ (no embryos) of this species in traps set along the edge of an old corn field lined with mesquite brush. Soil muddy from rain, slightly sandy.