1925] 
Storer: A Synopsis of the Amphibia of California 
211 
From some of the eggs which were collected on April 14 and 15 
three larvae were hatched on or about April 20. These measured as 
follows: Total length 8.1 millimeters; length of head-and-body 3.2 to 
3.6 mm. ; greatest height of body 1.0 mm. ; height of caudal fin at anus 
1.3 mm.; tip of snout to orbit 0.4 mm.; interorbital width 0.6 ipm. 
The general coloration was dull yellow, suffused with dusky on the 
back and along the sides of the caudal myomeres. On one larva, 
slightly older, tjie lateral surface of the tail was marked by aggre- 
gations of dark pigment with intervals of the prevailing yellow 
between. This is the forerunner of a conspicuous cross-banding of 
the tail which characterizes the larva of more advanced age. 
Definite information on the life-history practically ceases with 
the data on the larvae reared from the eggs found in Snow Creek and 
the larvae from Palm Canon. 
Females taken at Sierra Madre on April 5, 1908, April 10, 1909, 
April 25, 1908, May 1, 1909, May 20, 1913, and May 30, 1918, con- 
tained eggs of large size. In one female secured on the last named 
date the eggs were already in process of resorption. These data 
suggest that the spawning observed in 1923 was probably at the 
middle of the breeding season. A female taken at Sierra Madre on 
April 11, 1908, and two secured in Lower Murray Canon, Riverside 
County, on April 7, 1918, were ‘spent.’ One nearly metamorphosed 
young hyla, with a mere stub of a tail remaining, was taken at La 
Puerta, San Diego County, on June 5, 1909 ; its head-and-body length 
is 17 millimeters. This indicates that the larval life, as with Rana 
boylii boy lii, is probably short. Three fully metamorphosed young 
individuals of the present species collected in the Arroyo Seco near 
Pasadena, Los Angeles County, on August 23, 1903, now measure 
18.0, 19.4 and 20.3 millimeters in head-and-body length. Two speci- 
mens from a spring on Pine Mountain at 2750 feet altitude near 
Escondido, San Diego County, collected September 4, 1906, are respec- 
tively, 22 and 23.6 millimeters long. It would seem that but little 
growth is accomplished in the autumn after metamorphosis. Thus, 
an individual collected in Tujunga Canon, Los Angeles County, 
“4/1/04” [probably April 1, 1904] is only 23.3 millimeters in head- 
and-body length. One taken near Sierra Madre on April 5, 1908, 
measures 20.2 millimeters, and another collected there on May 20, 
1913, was 28 millimeters long in life, and now, in alcohol, measures 
26.4 millimeters. 
