Notes on the white-tailed antelope squirrel, Ammospermophilus leucurus, and the pinyon mouse, Peromyscus truei, in north central Nevada

A four-season live trapping study in the Whirlwind Valley, on the Lander and Eureka county lines near the Humboldt River, yielded two species previously unrecorded from both counties, Ammospermophilus leucurus and Peromyscus truei. Both records represent minimal airline range extension of 113 and 105 km. It is suggested that the distribution of A. leucurus may include the entire northeastern quadrant of Nevada. The occurrence of P. truei in sagebrush habitat 21 km from the nearest pinyon woodland is unusual and suggests that this species may occur patchily distributed throughout the lower elevation ranges in the northern portion of the state.