Murray 1948 Apr 30 San Ignacio, 500 ft., Baja California around a few times and hang up on the stone ceiling momentarily, appearing to swing into the upside down position in one quick motion. The momentum then made them rock back and forth a few times. May 1 San Ignacio to San Lucas Departed from San Ignacio with 4 species of bats: Tadarida mexicana, Myotis yumanensis, Macrotonus californicus and Centronous (1). We traveled for several miles on the same lava rock terrain with many cardons. Then went down a hill to a long flat plain of gray sand and creosote, palo verdes, yucca, ironwood. Near the end of this came to the first of the "Three Virgins", a large well formed volcanic cone. Around it were ledges of lava, the uppermost of which was relatively fresh, unweathered material, rather porous and broken up. On it grew little but scrubby copale. After circling around the volcano we very sharply descended from the lava plateau and crossed a mixture of lava and sandy desert. This was grown over with a variety of cactus and brush, including cardon dulce or organ pipe cactus which