THE BATRACHIA OF NORTH AMERICA. 



411 



The upper parts generally are smooth, the sides apparently some- 

 what corrugated (scarcely pustular), though how much is owing to the 

 alcohol can not be easily determined. The posterior, inferior, and su- 

 perior faces of the thiglis are granulated; this, however, not extending 

 to the body, which is inferiorly entirely smooth. A rather broad but 

 low fold of skin may be traced from above the tympanum along the 

 back nearly to the thigh. A small ridge behind the tympanum. 



The inner toe does not reach much beyond the middle of the meta- 

 tarsal of the fourth. The web is but slightly developed; it extends 

 fully only from the penultimate articulation of the outer to the ante- 

 penultimate of the fourth toe ; from this to the penultimate of the 

 third ; from the middle of the third phalange of this (countingTrom tip) 

 to the second articulation of second ; from third joint of second to first 

 joint of fifth; in each case extending a little beyond as a narrow mar- 

 ginal membrane. The terminal two and one half phalanges of the 

 longest toe, however, are almost entirely free, and one and one-half of 

 tlie rest. The membrane is more cut out on tlie inner edges of the 

 joints than the outer, by nearly one phalange. The cuneiform bone is 

 slightly developed. Ko tubercle opposite on the outer edge of sole. 



Upper parts brownish- olive, minutely and obsoletely mottled with 

 lighter. The entire upper parts and sides are covered by a number of 

 dark brown blot^ches, with light yellowish center; they are subcircular, 

 and smaller than the tympanum. They are most distinct and crowded 

 anteriorly, and do not iuvade the outer ridges of skin. The ground- 

 color of the upper surface of tlie fore limbs and the sides of the head 

 is yellowish-brown, with vermiculation of brown, as also some distinct 

 blotches of the same on the former. The hind legs have numerous par- 

 allel and transverse dark brown bars, three or four on the thighs, four or 

 five on the tibia, three on the tarsus, and several on the edge of the foot. 

 These bars are broader than their interspaces, and are margined by a 

 narrow yellowish line, so that the interval between two adjacent light 

 lines exhibits a brown ground lighter than the dark bars just described, 

 and also transverse. Indeed, they may be described as narrower bars of 

 lighter tint between tlie dark bars, parallel to them, and separated by 

 narrow yellowish-brown lines. The lower parts are yellowish-white, 

 unspotted, including the interior and inferior surfaces of the limbs, A 

 few scattered blotches are seen on the throat and chin. The buttocks 

 are yellowish white, with a few obsolete dark blotches, smallest on the 

 posterior edge. The central third of the tympanum is white. 



Inches. 



Body 3.00 1.00 



Femur 1.25 .42 



Tibia 1.45 .48 



Tarsus 75 .25 



Hindfoot 1.46 .49 



Difference between shortest 



and louaest toes 1.02 .34 



Inches. 



Totalhiudleg 1.48 4.44 



Fore leg from elbow 38 1.14 



Hand 23 .69 



Width of head 35 1.04 



Chord of jaws 35 1.06 



Tympanum 08 .23 



