O. P. PEARSON 1949 2 Jacklighted till 10 but saw nothing except bats, 1 Pero (robased) and 1 Boar in live traps. Aug. 10 Out of about 125 traps out got 2 new species: Retheringtonia and Sorex pacificus. Threw out 3 L. rogana, 1 trawbridgei, 7 Peromyscus. No disturbance and no bait removed from steel traps. The Scirpus marsh yielded no Mice ates, in fact the only one so far is an immature Microtus longicauda? from Cogswell's line. Picked up the last of the traps in East marsh and put them into Scirpus marsh, baited with oatmeal. I get the impression that (judging by droppings) mice are attracted to the places where cane have chewed off the Scirpus and the new shoots are coming out for a couple of inches. There are very small droppings. Traps now out: 50 Sherman in Scirpus, +40 Museum Specials in Scirpus, 7 steel; 6 Schuylers in Scirpus, 33 Museum Specials in Sphene-fern grass. Aug. 11 3 Mice at last - in oatmeal-baited museum specials in Scirpus marsh, all M. longicauda. Nothing in steel traps and nothing in the Schuylers - some of the latter are very nice rabbit-sized runways. Two more Zapus in Sphene-fern grove, one of them in an almost pure fern stand with practically no grass or edge within 5 yards. Otherwise more Peromyscus, Sorex rogana & pacificus. Much skining. Set out about 15 museum specials with oatmeal in dry grass meadow SE of camps and 7 Schuylers + rat traps around 2 wood rat nests. Threw out 6 Peromyscus, 1 Sorex pacificus, and 2 trap-caught song sparrows and 1 young thrush from trap in Sphene-fern. Trap lines have not caught much during daytime.