4. JIYLA. 349 



1 . Hyla maxima. 



Ilvla langsdorlfii, Giinth. Cat. p. 98. 

 Seba, i. t. 72. f. 3. 



Rana maxima, Lain: Syn. liept. p. 32. 

 Calamita maxima, Schneid. Hist. Amph, p. 163. 

 Hyla palmata, Daud. Bain, p. .'is, pi. 14, and Kept. viii. p. 79. 



geographies, Spix, Spec. Nov. Test. Han. p. '-19, pi. 11. f. 1. 



Calamita palmatus, Merr. Tent. p. 173. 



Hypsiboas palmata, part., J77«//. Si/st. Amph. p. 200; Tschucli, Batr. 



p. 7'->. 



geograpkica. part., Wagl. I. c. 



Hyla palmata, part., Dum. cy Bi'br. p. 545. 



(Centrotelma) langsdorilii, Burmeist. Erlauter. Faun. Bras. 



p. 100. 

 Ciuclidium granulatimi, Cope, Journ. Ac. PJdlad. (2) vi. 1867, 



p. 202. 

 Hyla maxima, Peters, Mon. Berl. Ac. 1872, p. 218. 



Tongue subcircular, entire, adherent. Vomerine teeth between 

 the very lai'ge choanas, in two angular series, forming together a 

 /~\-likc figure. Head large, depressed, a little broader than long ; 

 snout subacuminate, nearly twice as long as the diameter of the 

 eye ; loreal region very oblique, concave ; canthi rostrales angular, 

 forming with the raised borders of the fronto-parietals a lozenge- 

 shaped figure ; crown concavo ; the greatest width of the interorbital 

 space measures twice the width of the upper eyelid; tympanum 

 very distinct, two thirds or three fifths the width of the eye. Three 

 outer fingers entirely webbed ; a distinct rudiment of pollex ; toes 

 entirely webbed ; disks of fingers and toes smaller than the tympa- 

 num ; subarticular tubercles moderate. The hind limb being carried 

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

 of the snout, or to between that point and the eye. Upper surfaces 

 minutely granulate ; belly and lower surface of thighs covered with 

 large granules ; a slight dermal fold along the outer edge of the 

 forearm and of the tarsus ; heel with a short triangular dermal 

 appendage. Brown or reddish above, variegated with lighter and 

 darker ; limbs generally with dark cross bars ; sometimes a dark 

 Vertebral line from end of snout to sacrum ; lower surfaces whitish, 

 immaculate, the male's throat brown. Male with an internal sub- 

 gular vocal sac. From snout to vent 117 millim. 

 Guianas ; Brazil. 



Demerara Falls. 



Sir E. Schomburgk [P.]. 



2. Hyla appendiculata. (Plate XXIII. fig. 2.) 



Ilvla geopraphica, (Hi nth. Cat. p. 99. 

 Hyla (Centrotelma) geographica, Burmeist. Erlauter. p. 00. 



Tongue subcircular, entire or slightly nicked, adherent. Vome- 

 rine teeth between the very large choana;, in two series, forming 



