60 U. S. NATIONAL MUSEUM BULLETIN 206 



Hyla mesophaea Hensel 



Figure 7 



1856. Hyla leucophyllata (not of Beireis) Burmeister, p. 104, pi. 31, fig. 4. 



1867. Hyla mesophaea Hensel, p. 154 (no type locality given). — Peters, 1872b, 

 p. 772.— BouLENGER, 1882a, p. 366; 1886b, p. 444.— Werner, 1894a, 

 p. 413.— Batjmann, 1912, p. 163. — L. Muller, 1922, p. 170. — Nieden, 

 1923, p. 291.— MiRANDA-RiBEiRO, 1926, p. 75, pi. 10, figs. 1, la.— 

 B. LuTZ, 1947, p. 243.— Mertens, 1950, p. 175. 



Description. — Adult male, USNM 70518, Angra dos Reis, Rio de 

 Janeiro. Vomerine teeth in two very heavy, transverse, narrowly 

 separated series behind the choanae; tongue two-thirds as wide as 

 mouth-opening, cordiform, deeply notched on its partially free pos- 

 terior border; head broader than long; snout moderately short and 

 rounded when viewed from above, rounded in profile; nostrils super- 

 olateral, shghtly projecting, their distance from end of snout about 



Figure 7. — Hyla mesophaea, USNM 70518: a, Dorsum; b, profile; c, foot; d, hand; all X %. 



half that from eye, separated from each other by an interval very 

 slightly less than their distance from eye. Canthus rostralis promi- 

 nent, loreal region very concave, the upper labial region jutting out 

 sharply below it. Eye moderately large, rather prominent, its diame- 

 ter slightly greater than its distance from nostril ; interorbital diameter 

 slightly greater than width of upper eyelid, IK times the width be- 

 tween nostrils. Tympanum very distinct, about two-thirds the diam- 

 eter of eye, separated from eye by an interval equal to about half its 

 own diameter. Fingers one-third webbed, fourth much longer than 



