Quast 1948 Antrogonus minor 3 June 22 Santa Rosalillito, 25+ ft S.E. and Bahia de Concepcion, Baja Calif. That several of this species would appear over the waterhole at once and also that this species would circle within the pit in a fixed manner before drinking. It was easy noting them as soon as they had circled twice and indicated the manner in which they would circle again. In contrast, the smaller bats (Myotis californicus?) would fly down into the pit immediately and fly back and forth several inches above the surface making an audible noise whenever it lit the water to drink.