360 HYLID^. 



lower surfaces whitish, immaculate. From snout to vent 50 

 millim. 



Ecuador ; (British Guiana ?). 



a. $ . Ecuador. Mr. Eraser [C.]. (Type.) 



23. Hyla boans. 



Hyla midtifasciata, Giinth. Cat. pp. 101 & 146, pi. viii. f. D. 



Hyla boans, Giinth. I. c. p. 102. 

 Ilvla boans, jDaud. Rcmi. ■^. 'SI, ytl. 1\, and Kept. \iu. ■^. Q\; Bum. 



'^- Bihr. p. 605 : Barmeist. Erlaider. p. 108. 

 — albopunctata, Spix, Spec. Nov. Test. Ban. p. 33, pi. 6. f . 5 ; 



Peters, Mon. Berl. Ae. 1872, p. 207. 



oxyrbiua, Rewh. t5j- Liitk. Videiisk. Meddel. 1861, p. 189; Cope, 



Proc.^Ac. Philad. 1863, p. 48. 

 Ilypsiboas rauiceps, Cqye, Proc. Ac. Pliiktd. 1862, p. 353. 

 — ^' — albipiinctatus, Cb/jf, Journ. Ac. Philad. (2) vi. 1867, p. 201. 



Tongue subcircular or suboval, entire or slightly nicked, adherent. 

 Yomerine teeth between the large choanse, in two series forming a 

 /~\ or a n. Habit slender, somewhat like Rana agilis. Head as 

 long as broad, or a little longer than broad ; snout subacuminate, 

 measuring about once and one third the diameter of the orbit ; the 

 distance between the nostril and the eye equals the diameter of the 

 latter ; canthus rostralis angular, straight ; loreal region not very 

 oblique, slightly concave ; inter orbital space as broad as the upper 

 eyelid ; tympanum very distinct, about two thirds the width of the 

 eye. A very slight web between the three outer fingers, none 

 between the inner ; a slight rudiment of pollex ; toes two-thirds 

 webbed ; disks of lingers and toes much smaller than the tympanum ; 

 subarticular tubercles well developed. The hind limb being carried 

 forwards along the body, the tibio-tarsal articulation reaches the 

 tip of the snout or beyond ; the tibia measures the distance from 

 axilla to vent, or somewhat less. Skin smooth, granular on the 

 belly and under the thighs ; a narrow, straight, glandular fold from 

 the eye above the tympanum, lost at a small distance beyond the 

 vertical of the shoulder. Greyish or reddish brown above, generally 

 with more or less distinct dark bands across the head, body, and 

 limbs ; sometimes a dark vertebral line ; sides of head and of limbs 

 dark brown ; lower lip white, with a brown margin ; beneath whitish, 

 immaculate. Male with an external gular vocal sac. From snout 

 to vent 70 miUim. 



Guiauas; Brazil. 



Mr. Bartlett [0.]. 

 Herr Kappler [C.]. 



Sir A. Smith [P.J. 



Mr. Stevens [C.]. (Type of Jfi/Ia 



miflttfasciata.} 

 H. A. Wickhara, Esq. [C.]. 

 Prof. Reinhardt [P.J. (As typical 



of Hyla o.vyrhina.^ 



