46 
University of California Publications in Zoology [Vol. 27 
General coloration of upper and lateral surfaces of head, body 
and tail, and exposed surfaces of limbs and feet, plain uniform dark 
brown, of reddish or blackish hue, sometimes nearly black, especially 
along sides of body; ventral surface abruptly pale yellow or (less 
often) orange, of even tint; tips of papillae on ventral surface often 
blackish ; tips of digits in aquatic males, blackish or dark brown ; side 
of swollen eloacal region in male with broad backward stripe of the 
dark back color encroaching on lighter color of under surface; iris 
yellow, mottled with black. 
A series of nine fresh specimens collected on Paine ’s Creek, at 600 
feet altitude, Tehama County, May 20 and 23, 1924, compared with 
Ridgway ’s Color Key (1912) exhibited the following coloration : dorsal 
surface, aniline black (one) or deep Mars brown (eight) ; ventral 
surface varying from scarlet to English red ; iris, naphthalene yellow 
(Grinnell, MS). 
Description of larva . — Muzzle truncate oval in outline from above, 
sloping to rounded tip in profile; external nares terminal; canthus 
rostralis distinct, about equal to orbit in length; interorbital space 
greater than length of orbit ; sides of head behind orbit parallel ; 
greatest width of head slightly greater than that of body at midlength ; 
costal furrows faint ; limbs slenderer than in adult ; dorsal fin extend- 
ing forward to a point between axilla and midpoint of body; ventral 
fin extends forward nearly to anal opening; gular fold distinct (pi. 6, 
fig. 12). 
Measurements of Adult Specimens of Triturus torosus from Central and 
Southern California 
M.V.Z. 
No. 
Sex 
Locality 
Date 
Total length 1 
Length of tail I 
Snout to gular 1 
fold 
1 Greatest width 1 
| of head 
j3 
6 
Interorbital 
| space 
Fore leg 1 
Hand 
Axilla to groin 
Hind leg 
Hind foot 
4992 
$ 
7 mi. w. Cazadero, Sono- 
ma Co 
June 
26, 
1913 
155 
82 
16.3 
15.4 
5.7 
4.0 
21.0 
7.5 
39.0 
22.3 
10.4 
4986 
9 
Gualala, Mendocino Co 
June 
30, 
1913 
165 
89 
18.7 
16.0 
5.0 
5.0 
22.2 
8.2 
38.0 
23.0 
11.0 
5012 
d 
6 mi. n. Willits, Mendo- 
cino Co. 
Aug. 
20, 
1913 
175 
95 
20.6 
16.5 
4.0 
24.4 
9.2 
33.5 
23.5 
12.2 
4973 
d 
Freestone, Sonoma Co 
June 
10, 
1913 
196 
110 
19.0 
17.6 
5.0 
5.2 
30.0 
10.5 
36.0 
31.8 
12.5 
4984 
d 
7 mi. w. Cazadero, Sono- 
ma Co 
June 
2, 
1913 
197 
117 
21.2 
17.0 
4.6 
4.5 
29.2 
12.5 
31.6 
27.7 
13.7 
4982 
d 
7 mi. w. Cazadero, Sono- 
ma Co 
June 
21, 
1913 
201 
117 
21.0 
17.2 
4.8 
6.0 
30.6 
11.3 
34.7 
27.2 
13.2 
4974 
d 
Freestone, Sonoma Co 
June 
10, 
1913 
225 
128 
23.2 
20.0 
5.6 
6.6 
29.3 
11.5 
39.0 
30.2 
14.3 
4474 
9 
Sierra Madre, Los Angeles 
Co....:' 
Apr. 
5, 
1908 
132 
65 
17.0 
16.0 
5.6 
4.1 
24.1 
9.0 
36.0 
24.7 
12.0 
4475 
9 
do 
Apr. 
5, 
1908 
133 
64 
18.0 
15.2 
5.0 
4.5 
24.5 
9.8 
36.0 
23.3 
11.6 
618 
d 
do 
Apr. 
10, 
1909 
162 
90 
19.2 
17.0 
4.4 
4.7 
26.4 
10.0 
26.5 
26.5 
12.7 
6855 
d 
do 
May 
30, 
1918 
164 
90 
16.8 
16.7 
5.0 
4.2 
24.0 
11.0 
30.0 
27.0 
13.2 
7985 
d 
do 
May 
30, 
1918 
164 
92 
18.0 
16.0 
4.8 
4.2 
23.0 
8.5 
27.0 
26.2 
11.3 
4477 
d 
do 
Apr. 
11, 
1908 
173 
97 
17.7 
16.6 
5.4 
4.8 
27.0 
10.0 
32.0 
27.5 
12.0 
4478 
d 
do 
Apr. 
25, 
1908 
180 
101 
19.2 
18.0 
5.2 
4.5 
28.3 
10 3 
37.0 
27.0 
13.5 
