P. PEARSON 1950 May 4 Left noon with Anita for Petaluma + Guernevee. Put 84 Benson + Sherman live traps baited with catfood in March and arrived [unreadable] at the same place (5 mi. S of Petaluma) where Brent and I stopped March 19 and where Anita, Mary, and Meredith trapped last winter. Saw no good guerevee sign. Then went to Guernevee (Golden's farm), arriving about 4. Put up the nets and caught almost all the Cory present (about [73], all female). Not more than 6 escaped. Most quite pregnant. Only 4 were unbanded over. Opened up 6 others to measure embryo size and then sewed them up and released them. The others opened up were not preg. or resorbing, so killed them as well as 1 month broken wing. Embryo size: 49-128163 - 17.9 - 142-138157 11 x 9 mm lump 42-139189 - 16.5 - 46-26635 10 mm long " 42-138191 12.5 mm long " 49-128161 15 mm long. Ran traps at 9 p.m.: 2 mice + 1 deer, May 5 Traps had 4 more mice and 4 more foxes. Mr. Meridith or Berther. Home 10 am. May 13 Left 1:45 p.m. for Pope Creek with (306-113) students. Stopped at abandoned winery near Argwin - no bats, also at the Moran Winery west of Argwin. Nice big winery with 3 floors (including very dark basement with casks) and numerous droppings. One bat flying in upper story but not captured. Looked like Myotis. 2 Entatus seen by others among basement casks. Many Sceloporus around lumber pile outside this winery and one Gerberovia coerulescens in bush pile near other Argwin winery. Arrived Pope Creek, 4 mi. NNE Pope Valley about 6 p.m. Students and I put out total of about 110 snap traps. Waited for bats over pool at dusk but saw only a