ELKADATUM 1955 Buffo boreas April 13 Marizera Creek, Marizera, 1900 feet, Marizera Co., Calif. - the west side of this tributary to Marizera Creek. The stretch of stream is located one block west of the center of town (Baked America, etc.) more detailed description later. I collected about 25 adult or toads, 1 gravid female (not in angulejus). Toward the SE end of the stretch I worked (near bridge) the cattails were thicker and some quite deeper. Many adult bullfrogs sighted here but no toads. 4 adults were collected by hand. A sample of Taddoles taken from near upper end of portion of stream. Todgodes so thick they appeared as a dense black patch over rocky bottom at margin of stream. Alyos plentiful right here, and toad actively frogging. Water added slightly over rocky substrate but moved very slowly where toads present. Groups of toads spread over area 4 x 10 feet but concentrated in two smaller (2x3') patches. Water temp. in midst of group 13.0°C at 7:20 P.M., Air 19.8°C. This spawn could be result of a couple matings. No pairs found tonight in angulejus, although abundance of males indicates that breeding is at possible zeek. April 14 Toads and bullfrogs survived trip. Note coloration pattern of an adult or which looks (see color notes) wetted stripe, is greenish like a B. carinus male.