380 BULLETIN 34, UNITED STATES NATIONAL MUSEUM 



Somewhat similar in general appearance and markings toiZ. versicolor, 

 althongU more slender, mucli smoother, and limbs more elongated. It 

 is one of the larger species. 



The tympanum is very large and distinct, nearly equaling the eye in 

 diameter, and having a slight fold of skin above it The head is nar- 

 rower, more ])ointed, and more deeply cleft than dn R. versicolor; the 

 snout in front of the eyes longer. The tougue is subovate, less free 

 behind than in H. versicolor, and scarcely notched. The posterior nares 

 are larger and nearer together; they are larger than the Eustachian 

 apertures, which are rather linear; the patches of teeth are very small. 

 The skin above is nearly smooth, little less so than in large specimens 

 of ffyla carolinensis. Beneath, however, the granulation is much as in 

 H. versicolor. The webbing of the feet is much as in R. versicolor; heel 

 to nares and end of muzzle. 



Above, ash-gray. A rather broad dark bar iiasses backwards and 

 inwards from above each eye, the two meeting in the middle. Behind 

 this is an irregular cross, with broad branches, forming acute angles 

 before and behind, the anterior extremities shorter and running into 

 the obtuse V-shaped bar between the eyes. Two blotches behind the 

 extremities of the posterior branches, as described in H. versicolor, and 

 often confluent with them. The thighs and legs are each barred trans- 

 versely with three bands; those on the hind feet are not distinctly to 

 be made out. On the upper jaw there is a distinct grayish- white spot 

 under the posterior half of the eye about the size of the tympanum. 

 Behind the tympanum, and extending on the base of the arm above, 

 is also a white blotch. The sides are yellowish-white, vermiculated 

 sparsely with black, which color is concentrated on and under the 

 scapular folds, so as to form a very conspicuous black spot. The pos- 

 terior faces of the thigh brown, with yellowish-white spots, not vermic- 

 ulated, as in the northern specimens of H. versicolor. Whole lower 

 surface dull white. 



Agrees with 11. arenicolor (Sonora) in length of hind limbs and smaller 

 fore-arm, but differs in being much smoother and larger; in the sub- 

 cruciform dorsal blotch ; black spot over fore-arm ; vermiculated or re- 

 ticulated thighs and side, still larger tympanum, etc. 



Inches. 



Total length 24 1.00 



Head, length 7^ .31 



Head, width 9 .37 



Forearm and hand from elbow.. 12 .50 

 Thigh 12J .51 



Inches. 



Leg 12i .52 



Tarsus 7^ .31 



Hind foot 10 .41 



Total hind leg 40 1.61 



