Murray 1948 Journal June 20 San Jorge, 25° 44' N, 112° 07' W, Baja Calif. ♂♂, ♀♀ Peromyscus maniculatus. Again, these were mostly dry, although 3 had been dewed on, probably by crabs. We have had little time here for anything but putting out traps and getting up specimens. This time put the live traps along the low salt marsh bushes fringing the high ide mark, and also the small scattered bushes in sand just behind them. Took the snap traps along the shore side of the mangroves, and found that here they grew much larger, with thick trunks and branches. There were several open spaces where I could walk in among them, and here set several traps, all in trees 3 or 4 feet off the ground or on mesembryan- themum growing matted on the branches. There was soft sticky mud, already about to be washed over by the tide. Some other traps were set in patches of marsh grass which grew out beyond the mangroves and were standing in water much of the time. Placed them on piles of dried stems which had washed up into a higher, firm mass. Took the rest of the traps around to the other side and put them up off the ground on