4. I1YLA. 365 



Ilyla tibiatrix, Luur. I. c. p. 34 ; Daitd. Rain. p. 36. 

 Rana zebra, var. venulosa, Shaw, Zool, hi. p. 124. 



■ meriana, Shaw, I. c. p. 133. 



Calamita boana, Schneid. Hist. Amph. p. 164 ; Merr. Tent. p. 173. 

 Ilyla venulosa, Daud. Rain. p. 35, pi. 1?>, and Reft. viii. p. 74; 



Gfravenh. Dclic. p. 24 ; Dum. $■ llilir. p. 560 ; Guichen. Rept. in 



Casteln. Anim. nouv. ou rares, p. 84 ; Burmeister, Erlauter. p. 106 ; 



Steindachn. Novum, Amph. p. 58, pi. 3. f. 18 ; Peters, Man. Berl. 



Ac. 1872, p. 219, & 1873, p. 613. 



zonata, Spiz, Spec. Nov. Test. Ran. p. 41, pi. 12. f. 1. 



— — bufooia, Spiv, I. c. p. 42, pi. 12. f. 2. 



Ilypsiboas venulosa, Wagl. Si/st. Amph. p. 201 ; Tschudi, L'atr. p. 72. 



Auletris tibiatrix, Wagl. I. c. 



Deudrohyas tibiatrix, Tschudi, Batr. p. 74. 



Ilyla vermiculata, Dum. Sf Bibr. p. 563. 



Scytopis hebes, Cope, Proc. Ac. Philad. 1862, p. 354. 



Acrodytes venulosus, Cope, Nat. Hist. Rev. 1865, p. 109. 



Scytopis venulosus, Cope, Journ. Ac. Philad. (2) vi. 1866, p. 85. 



Tongue circular, entire or indistinctly nicked, and slightly free 

 behind. Vomerine teeth on a level with the hinder edge of the 

 choanae, forming generally a straight interrupted series, sometimes 

 a very open chevron, the point of which is directed forwards. Head 

 moderate, broader than long ; snout short, rounded, a little longer 

 than the diameter of the orbit ; canthus rostralis rounded ; loreal 

 region concave ; interorbital space as broad as the upper eyelid ; 

 tympanum very distinct, about two thirds the diameter of the eye. 

 Fingers one-third or one-fourth webbed ; no projecting rudiment 

 of pollex ; toes three-fourths webbed ; disks as large as, or nearly as 

 large as, the tympanum ; subarticular tubercles very prominent ; 

 no tarsal fold. The hind limb being carried forwards along the 

 body, the tibio-tarsal articulation marks tbe tympanum or the eye. 

 Upper sufaces generally warty ; a fold above the tympanum ; in old 

 specimens, the derm of the region limited by this fold frequently 

 thickened into a parotoid ; lower surfaces granulate. Brown above, 

 spotted or marbled with darker ; hind limbs with broad dark cross 

 burs ; lower surfaces whitish, immaculate. Male with two very 

 large external vocal vesicles, each being situated behind the angle of 

 the mouth; during the breeding-season the inner side of the first 

 finger covered with brown rugosities. Prom snout to vent 93 

 milium 



8. America. 



Rev.W.T. Turner [C.]. 



Herr Kappler [C.]. 



R. Graham. Esq. [P.]. 

 H.W.Bates, Esq. [0.]. 

 Dr. Giintker [P.]. 

 Sir A. Smith f P. 1. 



