236 University of California Publications in Zoology [Vol. 27 
been taken at Campo (Grinnell and Camp, loc. cit.) ; in northern 
Lower California it has been found on San Pedro Martir Mountain 
(Van Denburgh, loc. cit.), and at San Tomas, La Grulla, and Rancho 
San Antonio (Schmidt, 1922, p. 634). Boulenger (1920, pp. 446-448) 
records a specimen from Tia Juana, the California Academy of 
Sciences has a specimen from Victorville, San Bernardino County, 
and there is in the Museum of Vertebrate Zoology a specimen from 
Oro Grande (Halleck Postoffice), San Bernardino County, on the 
Mohave Desert. Whether these specimens represent natural occur- 
rences or whether they are ‘transplants’ for ‘frog farming’ is un- 
known. 
In the San Joaquin Valley draytomi has been found at Gadwell, 
Merced County, and Minkler, Fresno County (Mus. Vert. Zook). No 
records are known for the Sacramento Valley. In the Coast Ranges 
it is present in many localities from Santa Barbara north to the 
stations listed above. Altitudinally this frog ranges from sea level 
as at Monterey (Stejneger, 1893, p. 225), to 4000 feet in the moun- 
tains of southern California (Camp, 19175, p. 124). 
Knowledge of the local distribution of this frog is much less com- 
plete than for some of the other species of western amphibians, due 
to the fact that the adults are quite wary, often escaping the attention 
of collectors, and to the further fact that the species is more active by 
night than by day and may not be seen unless especially hunted for 
after nightfall. This species has been used on several ‘frog farms’ 
in California; but in no authenticated case which has come to the 
writer ’s attention has it been transplanted to areas outside the natural 
range of the species. 
Life-history. — This is essentially a pond-dwelling frog. It may 
occur along stream courses, but only in places where there are large 
permanent pools. The larval period is relatively long and the adult 
frogs are highly aquatic, spending practically all of their time in the 
water ; situations in which the pools become reduced or dry up com- 
pletely are not likely to be inhabited by the species. It is known to 
occur in a number of water-storage reservoirs and other artificial 
ponds, and it has been cultivated with some degree of success in ponds 
of quiet water on one or more ‘frog farms’ within the State. Camp 
(MS) states that it has been found in water tunnels near Sierra Madre 
and occasionally under dripping ledges and overhanging rocks on the 
borders of foothill streams. However, it is not to be found out on 
bare rocks in streams, as is commonly the case with Rana boylii. 
