Murray 1948 Journal Apr 14 El Mayor en route Mexicali, Baja California. Took in traps which had 18 Peromyscus eremicus and 18 Peromyscus crinitus. Put them up and broke camp, bound for Mexicali. As we were leaving I saw a white-crowned sparrow and Dr. Benson shot a Pipistrellus hesperius flying in a straight line (the bat). On the way there were several black-necked stilts, a willet, some sandpipers and coots, all in pools by the road. This was irrigated farm land- mostly hay raising. Apr 14 Mexicali, Baja California. Appeared at the Governor's Palace hoping for special hunting permits which had not been granted as yet from Mexico City. No word had yet arrived. We drove out the road to Ensenada and camped beneath the Sentinel Mountain or Cerro Centinela. Apr 14 Cerro Centinela, 300' ft., 13 mi WSW Mexicali, Baja Calif. We are in a sandy, slightly rocky wash, looking up at the mountain to the north. It looks bare and uninverting from here. The wash has the the omnipresent creosote and ironwood, plus several bushes I can't identify, and some cotillios; all pretty sparse. The weather is muggy and stifling. Put out 50 live traps in a channel in