358 BflLLETIN 34, UNITED STATES NATIONAL MUSEUM. 



insertion of tlie forearm. The extreme edge of tbe upper jaw is dark, 

 and tlie space between tliis and the preocular line rather lighter than 

 the ground color. In the extension of this light space backwards 

 it becomes lighter, until from beneath the eye it passes below the 

 postocular band to the base of the fore- arm as a grayish- white vitta, 

 usually about half as broad as the one above- it. Sometimes a series 

 of scattered rounded spots may be traced along the side in continuance 

 of the dark postocular vitta. The extremities above are transversely 

 and narrowly but indistinctly barred with darker. The rest of the 

 legs is uniformly flesh color (thighs posteriorly dusky) except a few 

 aggregated pustules below and about the anus, which are white (no 

 marking on the inner faces of limbs); this is seen In other species, but . 

 is very distinct here. The immediate border of the anas is brown; 

 beneath, white ; edge of gular sac, black. 



In some specimens, especially those from Fort Tejon, the prevalent 

 color above is ash-gray, with an elongated blotch along each side of 

 the back for its whole length, and one or two others on each side of 

 those dorsal blotches are nearly wanting. Sometimes the exterior edges 

 of the tibia and feet (when flexed), are blotched with browu. 



This variety resembles H. scjuirella, bat the head is less depressed ; 

 the colors are darker; the dorsal blotches are larger, and elongated 

 longitudinally in two or three series ; the white margin to the much 

 darker postocular vitta is broader; the body is stouter, and usaally 

 more or less granulated. The toes are less deeply webbed. 



The figure of this species in volume ten of the Pacific Eailroad Sur- 

 veys represents an interdigital membrane anteriorly, which does not ex- 

 ist, and that of the posterior limb is too extensive. 



1 2 4 6 11^ 



Via. 89. Hylaregilla. No. 13796. Shasta Co., California; }. 



Measurements o/iVo. 8688. 



if. 



Length of head and body 039 



Length of head to posterior line of tympana Oil 



Width of liead at posterior line of tympana 014 



Length of fore limb 022 



Length of hind limb 053 



Length of tibia 017 



Length of tarsus 010 



Length of rest of foot .-- . 015 



The specimen measured is of medium size ; another from the same 

 locality has the length of the head and body equal to 45™™. 



This, the only species of the Pacific region, is quite abundant there. 

 I have caught them along the western edge of the Great Basin in Ne- 

 vada and Oregon, where they inhabit the marshes which surround the 



