THE BATRACHIA OF NORTH AMERICA. 433 



tulated with small asperities, seen even on the interior digital mem- 

 brane. Those on the hattocks seem to replace the usual granulation, of 

 which no traces are visible. Many of these latter pustules ou the but- 

 tocks appear to consist of glands, as their open mouths are visible in 

 the largest specimen on the inferior surface. 



The third finger is longest, then the fourth ; the first longer than the 

 second. The femur is shorter than the tibia, and both shorter than the 

 foot ; they are not quite half the length of the body. The fifth and third 

 toes are equalj the foot well webbed. The terminal jointof the fourth toe 

 is entirely free; the web extends from the tip of the outer toe to nearly 

 the second articulation of the next, running up to the first articulation, 

 and again on the other side in a similar manner, narrowing to the tips 

 of the third, second, -and first toes on the exterior sides, and on the in- 

 ner, starting from the first articulation. The inner edge of the foot is 

 narrowly margined. The cuneiform process is elongated and diminu- 

 tive, with a small tubercle opposite it on the sole, the whole of which is 

 covered by asperities. Inner roe not one-third total length of foot. 



There is a broad depressed ridge extending from the eye on each side 

 nearly to the flanks, becoming indistiDct posteriorly ; in some specimens 

 perceptible at any point. No other ridges are visible, except a slight 

 glandiform prolongation of the upper jaw, extending over the arm, and 

 interrupted opposite the end of the jaw and above the shoulder by the 

 groove passing behind the tympanum. 



General color, above dull yellowish-brown (dead leaf), darker on the 

 sides. A number of circular brown blotches on the back between the 

 ridges, which themselves are rather brighter than the rest of the ground- 

 color, and not invaded by the blotches. In some these blotches are 

 very few in number, and in none are they in any definite serial arrange- 

 ments or areolated. The outer surfaces of the limbs are blotched 

 transversely; a dull yellowish line along the upper jaw, distinct only 

 under the eye, narrowing behind, and terminating above the arm ; in 

 young specimens an indication of a dark area back of the eyes and 

 including the tympanum, somewhat as in B. sylvatica. Under parts 

 yellowish-white, obsoletely marbled with brown. In life the groin and 

 posterior parts of the abdomen, with the adjacent parts of the thighs, 

 are salmon-color. I took a specimen at Salt Lake City, Utah, which 

 has no trace of dermal folds, and a smooth skin. Sides and above uni- 

 form dusky ; thighs below and posterior part of abdomen red. 



This is the characteristic Eana of the northwestern interior, being 

 accompanied by Bufo columbiensis and Bascanium vetustum. In life the 

 posterior part of the abdomen, with the inferior faces of the thighs, are 

 of a bright salmon red. I obtained it the entire length of the valley of 

 the Warner Lakes, but not at Fort Bidwell. I have found it to range 

 as far as the eastern foot of the Rocky Mountains in Montana;* and 



*Americaii Naturalist, 1879, p. 435. 

 1951— Bull. 34 JS 



