26. DIADOPHIS 651 
Kern (Tejon Pass), Mendocino (Ukiah), Lake (Highland 
Springs), Napa (Calistoga, Mount Veder), Solano (three 
miles west from Vacaville), Sonoma (Healdsburg, Sonoma, 
Petaluma, Monte Rio, Skaggs Springs), Marin (Lagunitas, 
Manzanita, Mill Valley, Mount Tamalpais), Contra Costa 
(Mount Diablo, Christy, Redwood Canyon), Alameda 
(Berkeley, Oakland, East Oakland), San Mateo (Redwood 
City), Santa Clara (Palo Alto, San Jose, Los Gatos), Santa 
Cruz (Santa Cruz, Soquel Creek), Monterey (Carmel), 
Santa Barbara (Los Alamos), Los Angeles (Arroyo Seco 
Canyon, Glendora, Sierra Madre, Claremont, Santa Cata- 
lina Island), San Bernardino (San Bernardino, Colton, On- 
tario, Santa Ana Canyon at 6,400 feet, San Bernardino 
Mts. at 4,000 and 5,500 feet), Riverside (Strawberry Val- 
ley at 5,500 feet in the San Jacinto Mts., Alessandro), 
Orange (Laguna Beach), and San Diego (San Diego, be- 
tween Carlsbad and Oceanside, Poway, Witch Creek), 
counties. 
In Lower California, this snake has been taken at San 
Matios Pass near the northern end of the San Pedro Martir 
Mountains, and on San Martin Island. 
Habits.—Diadophis amabilis is most often found under 
boards or logs in moist localities, sometimes even in 
salt marshes. One specimen had eaten a half-grown tree- 
toad (Hyla regilla). Nothing is known of its breeding 
habits. Grinnell & Grinnell say it is fairly common in the 
canyons and hills of Los Angeles County. They found it, 
in August, feeding on the young of H/y/a, and, in spring, 
coiled up in cavities under rocks. Regarding one captured 
June 9, 1906, Grinnell states (1908): “When thoroughly 
alarmed and its escape into the bush for which it headed 
was prevented, the snake twisted its tail into a tight cork- 
