Boulevard, GT 1942 Itinerary Apr. 8 Muddy Creek. distinct earth tremor lasting a couple of seconds. It resembled earthquake more than any other explanation we could synthesize. (127 trap) Our trap line last night was set along the edge of the road on the flat in an open stand of Artemisia californica with scattered Baccharis and Salvia mellifera. There is a ground cover of young grass about 3-5 inches high. The catch included Reithrodontomys, (4♂ and 3♀); Peromyscus maniculatus, 3 (2♂ and 1♀); Peromyscus (truei or boylii), 2 (1♂ and 1♀); Penognathus californicus, 1♂; and 1 Bewick Wren. We hiked on up this wood road which follows Muddy Creek. The road runs up the small valley parallel and south of Chichular Canyon for some distance, then circles around and to the top of the hills to the north. These hills are not very high and seem hardly worthy of the term "mountains". Artemisia grows well up the slopes; the tops are dry, covered only with short grass and spring wild flowers. In abundance on these hilltops are shooting stars, buttercups, tidy-tips, cream cups, filaree, gold fields, and so forth. From the top of the hill we could look above the fog and see in the west the tops of the Santa Lucia Mts. The fog in the canyon lifted about noon and the remainder of the day was warm and sunshiny. Tonight the road that was dry enough for Mrs. Grinnell to drive us up to the flat with our traps. Of birds seen today, I might mention the lark sparrow, horned lark (?), green-backed goldfinch, spotted towhee, song sparrow. Quail are numerous, as are also California Jays. Mrs. Grinnell caught three