1925] 
Siorer: A Synopsis of the Amphibia of California 
271 
Description. — Form moderate, body slender, legs long ; head 
acutely oval in outline from above, muzzle thin, slanting in profile ; 
external nares below beginning of distinct canthus rostralis, nearer 
tip of muzzle than orbit, opening dorsally ; side of muzzle below 
canthus rostralis slightly concave; orbit moderate; interorbital space 
flat, half to four-fifths length of orbit; tympanic membrane round, 
close behind and below orbit, its greatest diameter about two-thirds 
length of orbit ; conspicuous raised and rounded ridge originating 
below anterior margin of orbit, extending posteroventrally to near 
origin of fore limb; short diagonal fold of skin from posterior margin 
of orbit extending obliquely over tympanic membrane to above fore 
limb; outline of lower jaw truncate-oval; fore limb slender; exposed 
portion of upper arm about equaling forearm in length ; hand long, 
exceeding forearm in length; palm with one or two elongate low 
tubercles; sesamoid tubercles large and conspicuous; digits slender, 
in order of decreasing length, 3, 4, 2, 1, the latter three subequal ; body 
ovate in outline from above; dorsolateral folds distinct, originating 
at diagonal ridge behind orbit; hind limb moderate; tibia equaling 
or exceeding femur ; tarsus about one-third length of foot ; length of 
foot about five-sixths length of head-and-body ; metatarsal tubercles 
two, outer (opposite fourth toe) decidedly smaller than inner; sub- 
articular tubercles round, smaller than on hand; toes long and 
slender, in order of decreasing length, 4, 3, 5, 2, 1 ; web large and thin, 
shallowly scalloped. 
Tongue thick, broadly heart-shaped, bluntly pointed in front, 
bilobed behind, about half width of mouth at angles of jaws, attached 
by anterior two-thirds to floor of mouth ; internal nares oval, close to 
sides of mouth ; maxillary teeth numerous but rather small ; vomerine 
teeth at inner ends of two oblique ridges between and slightly behind 
internal nares. 
Surfaces generally rather smooth ; dorsal surface of body evenly 
and finely roughened in old individuals; palms and soles smooth, save 
for tubercles described above ; ventroposterior surfaces of thighs with 
close-set rounded papillae. 
Color (in alcohol) above, yellowish brown of light or dark shade, 
beset with few or many various-sized irregular spots of inky black 
(not margined with lighter color) ; limbs crossed by obscure bars of 
blackish ; ridge along upper lip white ; under surface clear yellow 
sometimes mottled with blackish on chin, throat, and sides of body ; 
under surfaces of hands and feet, dusky. 
Live specimens from Seattle, Washington, presented the following 
coloration in life : dull or bright yellowish or reddish brown on head, 
back, and upper surfaces of arms and legs ; back between dorsolateral 
folds with few or many irregular roundish spots (like splashes of ink) 
of black; lower sides light yellowish gray, unspotted; under surface 
light, marbled obscurely or conspicuously with grayish brown ; under 
surface of legs and sides and posterior part of belly salmon red ; streak 
along upper jaw, light ; iris bright yellow, not orange-colored or 
bronze (adapted from Dickerson, 1906, p. 218). 
