374 BULLETIN 31, UNITED STATES NATIONAL MUSEUM. 



eye is an elongated blotch of dark browu, passing obliquely backwards 

 towards its fellow, leaving a space between and forming an interrupted 

 V. Posterior to these and in the anterior iiortiou of the back is a 

 single very large blotch, snbcruciforni in shape, from sending out a 

 branch on each side towards the eye, more or less parallel with the 

 blotches first mentioned. The posterior corners are also obliquely 

 elongated to a greater or less extent. Immediately behind the large 

 blotch may be usually traced two others, which are elongated, and 

 extend obliquely to the sides of the body in a direction generally par- 

 allel with the outer edges of the dorsal blotch. A dusky, indistinct 

 bar extciuls from the eye along the upper edge of the face through 

 the nostril to the tip of the snout, and the edge of the upper jaw is 

 more or less marbled with the ground colors. A conspicuous spot of 

 light gray (with dark border) is always visible among other markings 

 beneath the posterior half of the eye and on the posterior portion of 

 the upper jaw^j it is a little in advance of the tympanum and some- 

 what longer. A dusky, indistinct mottled band passes from the eye 

 backwards through the tympanum along the side of the body, dark- 

 est along the undulating up]:)er edge, where it is margined sometimes 

 by yellowish-white. The fore- arm has two transverse dark bands; the 

 thigh, leg, and tarsus each the same number. All the surfaces of 

 limbs concealed when flexed are vermiculated with brown on a yellow- 

 ish ground, the light intervals angular, even on the inside of tibia and 

 foot. The anterior and posterior faces of the thigh and leg are yellow, 

 sharply and narrowly marbled with brown. Beneath yellowish-white. 

 Males, in spring, with the gular sac, mixed ash, brown, and white. 



Si^ecimen described from Grosse Isle, Mich. 



The females differ mainly in the smaller tympani. 



In other specimens, from Carlisle, Pa,, there is evident a constant 

 dark spot on the side of the upper jaw and beneath the anterior half of 

 the eye, the light spot already described being situated between it and 

 a narrow dark line in front of the tympanum. Sometimes the entire 

 back, by the confluence of the blotches described, is occupied by a large 

 mottled cross, the anterior fork very short. The anterior face of the 

 arm is blotched with tlark -, the posterior marbled like the thigh. Some- 

 times the blotches are more or less obsolete; at others they are reduced 

 in size, although usually cruciform in their arrangement. The color of 

 the back is sometimes grass-green, with the dark blotches, which vary 

 in extent. 



In the southern and western specimens there is a tendency to a re- 

 placing of the brown reticulation on the yellow ground of the posterior 

 lace of the thighs by a number of subcircular golden spots in the brown 

 ground, as in the H.femoralis, although northern specimens sometimes 

 show traces of it. This is very evident in specimens from Prairie Mer 

 Eouge and Tangipahoa Eiver, Louisiana, and Dallas, Tex. As a gen- 

 eral rule, too, the portions of the limbs concealed, or in contact with 

 each other when flexed, are in northern specimens more fully marbled 



