62 CALIFORNIA ACADEMY OF SCIENCES [Proc. 3d Ser. 



cylindro-conic, somewhat compressed in posterior half, nearly equal to 

 length of head and body; head depressed, about width of widest part of 

 body; snout broadly truncate from above, rounded in profile; eyes moderate, 

 smaller than in P. oregonensis, rather prominent, separated anteriorly by 

 nearly twice the length of the orbital slit ; nostrils small, near corners of snout, 

 separated by about their distance from pupil ; subnasal groove descending 

 nearly to margin of lip ; line of lip descending slightly below corner of snout 

 and ascending below posterior edge of orbit; palatine teeth in 2 slightly 

 curved series beginning some distance behind and a little internal to the 

 internal nares, converging obliquely backward, and scarcely separated on 

 the median line ; parasphenoid teeth in 1 patch throughout, separated from 

 palatine teeth by an interval equal to distance from nostril to edge of lip ; 

 internal nares rather small ; tongue large, ovate, not emarginate, attached 

 along median line but free laterally and for a short distance behind ; neck a 

 little narrower than 'body, with large elongate parotoid gland divided by a 

 longitudinal groove running posteriorly and downward from eye to gular 

 fold, other grooves behind, above and in front of parotoid ; a groove along 

 vertebral line ; costal grooz'es between limbs 12 on right, 13 on left, not 

 continued to midline either above or below ; limbs a little shorter and stouter 

 than in P. oregonensis, anterior with 4 and posterior with 5 digits ; digits 

 rather short, with broad rounded ends each with a terminal pad below, inner 

 shortest, third longest, second finger longer than fourth, second toe shorter 

 than fourth which is but little shorter than third ; web well developed, 

 extending nearly to end of inner digits, 2 phalanges of third and fourth toes 

 free, feet very broadly palmate ; tail slender, slightly compressed in posterior 

 two-thirds, with rather indefinite grooves on proximal half; skin shiny, but 

 roughened above and laterally and pitted below by the mouths of small 

 glands; adpressed limbs separated by about the distance between 2 costal 

 grooves. 



A broad band extends along the whole dorsal surface from 

 the snout to the tip of the tail. In the alcoholic specimen 

 this band is dark clay-color, dotted with black on the upper 

 surface of the head. It is broadest on the back of the head 

 and narrowest above the anus. The upper surfaces of the 

 limbs and the side of the snout are clay-color dotted with 

 black. A black line runs from the eye to the nostril. The 

 hands and feet are black dotted with clay-color. The chin 

 and central gular region are white with a few scattered 

 black dots. The sides of the neck and the sides and lower 

 surfaces of the body and tail are intense black with a few 

 scattered whitish dots on the belly and sides of tail and with 

 a zone of crowded white dots along the sides of the neck 

 and body. 



