270 
University of California Publications in Zoology [ Vol . 27 
Egg 
Vitelline 
capsule 
Inner 
jelly coat 
Middle 
jelly coat 
Outer 
jelly coat 
Minimum 
1.67 
1.78 
2.00 
2.22 
4.23 
Maximum 
2.00 
2.11 
2.50 
2.72 
4.78 
Average of 10 
1.80 
1.97 
2.25 
2.35 
4.48 
Kana pretiosa pretiosa Baird and Girard. Western Spotted Frog 
Bana pretiosa Baird and Girard (1853ft, p. 378). Original description, type 
from Puget Sound. 
Bana temporaria pretiosa, Cope (1889, pp. 432-434, text fig. 110), part. 
General account. 
Bana pretiosa, Chamberlain (1897, pp. 255, 258; 1898, p. 259). Economic 
status. 
Bana pretiosa, Dickerson (1906, pp. 218-221, col. pi. 16, pi. 83 [figs. 260- 
263]). General account; breeding habits. 
Bana pretiosa pretiosa, Camp (1917ft, pp. 123-124). Characters; general 
range. 
Bana pretiosa pretiosa, Grinnell and Camp (1917, p. 148, fig. 5). Range 
in California. 
Bana pretiosa pretiosa, Stejneger and Barbour (1917, p. 38; 1923, p. 36). 
General range. 
Bana pretiosa, Boulenger (1920, pp. 452-455). General account. 
Diagnosis. — Size moderate among California frogs, total length 
up to 73 millimeters (2% inches) ; hind leg proportionately short, 
inside angle of flexed tarsus not reaching beyond external naris; 
vomerine teeth grouped in two clusters between internal nares; fold 
of skin along upper lip light colored ; back with numerous inky black 
spots ; two metatarsal tubercles ; ventral surface of body and hind 
limbs often red. 
Comparisons. — Distinguished from Scaphiopus by absence of cut- 
ting spade on hind foot; from Bufonidae by absence of parotoid 
glands and presence of teeth, from Hylidae by absence of expanded 
discs on digits; from Bana b oy Hi ssp. by concentration of vomerine 
teeth between internal nares, larger size of maxillary teeth, presence 
of white fold of skin along upper lip, presence of inky black spots on 
dorsal surface, and presence of red in ventral coloration ; from Bana 
aurora ssp. by shorter hind leg (inside angle of flexed tarsus not 
reaching beyond external naris), and presence of black spots not 
margined with lighter color on back ; from Bana pipiens by less acute 
outline of head, smaller tympanic membrane, less well-developed 
dorsolateral folds, absence of white margins around dark spots on 
back, and presence of red in coloration ; from Bana pretiosa luteiven- 
tris by presence of two metatarsal tubercles, by presence (usually) 
of two palmar tubercles, by greater number of, and larger, blacker 
spots on dorsal surface, and by deeper tone of red in coloration of 
ventral surface. 
