4. HTLA. 365 



Hyla tibiatrix, Laur. I. c. p. 34 ] Baud. Rain. p. 36. 



Rana zebra, var. venulosa, Slimv, ZooL iii. p. I'l^. 



— — meriana, Shmc, I. c. p. 133. 



Calamita boans, Schneid. Hist. Amph. p. 164; Merv. Tenf. j>. 173. 



Hvla venulosa, Baud. Rain. p. 35, pi. 13, and Rcpt. viii. p. 74 ; 



'Gravmh. Belie, p. 24 ; Bum. ^' Bibr. p. 560 ; Quicken. Rept. in 



Casteln. Anim. nouv. ou j-ares, p. 84 ,- JBunmider, Erlduter. p. 1U6 ; 



Steindac/in. Xomra, Amph. p. 58, pi. 3. f. 18 ; Peters, 3Ion. Berl. 



Ac. 1872, p. 210, & 1873, p. 613. 



zonata, Spix, Spec. Nuv. Test. Ran. p. 41, pi. 12. f. 1. 



bufonia, Spi.v, I. c. p. 42, pi. 12. f. 2. 



Hypsiboas venulosa, Wagl. Syst. Amph. p. 201 ; Tschudi, Batr. p. 72. 



Auletriri tibiatrix, Wayl. 1. c. 



Dendroliyas tibiatrix, Tschudi, Batr. p. 74. 



Hyla venniculata. Bum. S)- Bibr. p. 563. 



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



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



Scytoiais venulosiis, Cojk, 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 ; cauthus 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 poUex ; 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 the tympanum or the eye. 

 Upper sufaces generally warty ; a fold above the tympantim ; 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 

 bars ; lower surfaces whitish, immactilate. Male with two very 

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

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

 finger covered with brown rugosities. From snout to vent 93 

 millim. 



S. America, 



Berbice. 



Better Hope, British Bev. W. T. Turner [C.]. 



Guiana. 

 British Guiana. 



Suriuam. HerrKappler [C.]. 



Cayenne. 



Para. R. Graham, Esq. [P. 



Santarem. H. W.Bates, Esq. |_C. 



Amazons. Dr. Giinther [P.j. 



Peruambuco. Sir A. Smith [P.1. 



S. America. 



