THE BATEACHIA OF NOETH AMEEICA. 439 



Bana agilis aurora Bd. Gird. 



Eana aurora. Bd. & Gird. Proceed. Ac. Nat. Sci., Phila. 



Body depressed, elongated ; limbs elongated and well developed ; head 

 broad, acute, rouuded anteriorlj^; nostrils elongated, situated below 

 the crest of the cauthus rostralis, half-way below the eye and tip of 

 snout; eye moderate, contained three times in the chord of the commis- 

 sure, situated two-thirds of its diameter from the rictus ; tympanum 

 small, but little more than half the diameter of the eye. Inner nares 

 rather elongated transversely. The vomerine teeth very few in each 

 patch; the patches quite small, somewhat elliptical, and inclined back- 

 wards, where they are separated by an interval a little less than that 

 between the anterior extremities and nares ; these extremities are in 

 a line with the centers of the nares, but the teeth are on the posterior 

 margins ; tbe protuberances are decidedly posterior to the nares. 

 Tongue small, narrow. Eustachian openings large. 



The skin is everywhere free from asperities, but not smooth, and on 

 an attentive examination is seen to be minutely pitted all over, and 

 with coarser indentation on the upper surfaces of the limbs, the sides 

 of the face, and along the dorsal fold, which appears quite porous. The 

 buttocks are much granulated, ti character which appears to extend a 

 little on the abdomen and sides. A broad depressed fold of skin extends 

 from the eye to the hind legs. This is distinctly perforated or porous 

 throughout its extent. There are no intermediate ridges ; a glandular 

 prolongation of upper jaw to the arm, interrupted at the posterior ex- 

 tremity of the jaw ; limbs very slender and much elongated ; hand 

 longer than the fore-arm ; fingers all long; third longest, fourth next in 

 size, then first and second. Femur rather less and tibia more than half 

 the length of the body ; hind foot and tibia about equal ; foot not very 

 broad. Fourth toe much the longest, and with the last two joints en- 

 tirely free, as are the terminal joints of all the toes. The third joint 

 of the longest toe has a very slight margin, diminishing to the second 

 articulation, and the inner sides of the third and second toes are 

 scarcely, if at all, margined. Cuneiform process small, soft; no other 

 tubercles on the sole, and scarcely any indications of any under the 

 joints. 



Color when living greenish-yellow above, with golden reflections, 

 maculated with black; sides of abdomen and hind legs reddish-orange; 

 beneath dull yellowish-green, maculated; digital membrane purplish- 

 violet. 



In alcohol. — Above yellowish-gray, brightest anteriorly. A few scat- 

 tered indistinct blotches on the upper parts and sides and scattered 

 black dots on the head, above the eyes, on the snout, and along the 

 dorsal ridge. Beneath yellowish, with obsolete small blotches some- 

 what marmorated anteriorly. The mottling is visible on the inner faces 



