THE BATRACHIA OF NORTH AMERICA. 



ChoropMlus nigritus Le Conte. 



EESEEVE SEEIES. 



339 



Catalogue 

 number 



9702 

 5935 

 3593 



No. of 

 spec. 



Locality, 



Arlington, Fla 



Liberty County, €ra. 

 Charleston, S. C 



When 

 collected. 



From whom received. 



Gr. Brown Goode . . 

 Dr. J. L. Le Conte 

 Dr. S.B. Barker... 



Nature of spec- 

 imen. 



Alcoholic. 

 Do. 

 Do. 



CHOROPHILUS FERIARUM Baird. 



RelcBoetea feriarum Baird, Proceed. Ac. Nat. Sci. Phila., 1854 (5), 59. 



This species is not unlike a young Hyla versicolor in the short and 

 rather squat form. The head is more pointed, however, the curve of the 

 mouth being parabolic rather than circular. The outline of the head 

 above exhibits an acute angle, with but a very slight curve to near the 

 nostrils. The sides of the head are quite oblique, and the direct distance 

 between the two anterior canthi, as measured with the dividers, is just 

 half that between the two extremities of the lower jaw, measured in a 

 similar manner. The upper jaw projects considerably over the under; 

 po much so that the nostrils are about directly over the end of the lat- 

 ter. The extreme distance between the rami of the lower jaw is the 

 same with that from the ends of these rami to the tip of the snout, thus 

 forming of the three lines an equilateral triangle. The tympanum is 

 quite diminutive, scarcely more than half the diameter of the eye; cer- 

 tainly not over half the straight edge of the eyelids. In the females 

 it is still smaller. Its center is situated directly over the angle of 

 the mouth or the rictus. 



The tongue is large, thin at the edges ; about one fifth longer than 

 broad, and cordiform behind, with the sides but slightly curved; free 

 behind for about one-third its length. The posterior iiares are nearly 

 circular and opposite a point half-way between the anterior canthus of 

 the eye and the outer nostril. The vomerine teeth are in two oval 

 patches, their axes inclined backwards at less than a right angle, the 

 anterior extremities commencing just inside the posterior nares and on 

 a line with their centers. 



The males are provided with a very prominent gular pouch, capable 

 of considerable inflation. 



The eyes are of moderate size, being a little more than one-third the 

 distance from the angle of the mouth to the tip of the snout. 



The limbs are of moderate development ; the fore-arm being less than 

 the hand. The arm from the elbow is exactly the length of the hind 

 foot, measured from the end of the tarsus. The femur and tibia are 

 equal and just half the length of the body. Closely pressed along the 

 sides, the tips of the hind toes extend nearly to the tympanum. The 



