Thatcher 1958 species account. Antrozous pellidus July 14 Vallecitos stage station, San Diego Co., Calif. At Beck took several of these night roosting in the stage station bldg. I plan to put several of them up. ( nos 533-534 ) July 15 Caught another of these bats while it was night roosting in the stage building about 12:30 (actually July 16, 1955) I froze it and prepared it later (557) July 16 Tunco Mine, 700± ft., Imperial Co., Calif. Several bats of this kind were seen in a horizontal mine shaft about 14 mi. W of where we were camped, along the north side of the valley. One of these was collected (546) while at least 3 others escaped. Macrotes californicus were also seen in the same shaft. July 8. Mountaineer (New Era) Mine, 750± ft., 5.5 mi. S, .6 mi. E Vicks Reserve Staging Two or three bats of this species were seen roosting in the horizontal shaft on the north side of the canyon at this mine. None were collected, however. (for further details see sp. acc. Macrotes californicus of this date and local.)