4,. HYLA. 349 
1. Hyla maxima. 
Hyla langsdorflii, Giinth. Cat. p. 98. 
Seba, i. t. 72. f. 3. 
Rana maxima, Laur. Syn. Rept. p. 32. 
Calamita maxima, Schneid. Hist. Amph. p. 165. 
Hyla palmata, Daud. Rain. p. 38, pl. 14, and Rept. viii. p. 79. 
— geographica, Spiv, Spec. Nov. Test. Run, p. 39, pl. 11. f. 1. 
Calamita palmatus, Merr. Tent. p. 178. 
Hypsiboas palmata, part., Wagl. Syst. Amph. p. 200; Tschudi, Batr. 
p: 73. 
geographica. part., Wag. 1. e. 
Hyla palmata, part., Dum. § Bibr. p. 545. 
(Centrotelma) langsdorfii, Burmeist. Erlduter. Faun, Bras. 
p- 100. 
Cinclidium granulatum, Cope, Journ. Ac. Philad. (2) vi. 1867, 
202 
aVe. 
Hyla maxima, Peters, Mon. Berl. Ac. 1872, p. 218. 
Tongue subcircular, entire, adherent. Vomerine teeth between 
the very large choane, in two angular series, forming together a 
/\-like 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 concave; 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 theeye. 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. 
a-b,c. 3 Q. Demerara Falls. 
d. 3. Brit. Guiana. Sir R, Schomburgk [P.]. 
e. 3, skeleton. Brit. Guiana. 
2. Hyla appendiculata. (Pxiare XXIII. fig. 2.) 
Hyla geographica, Giinth. Cat. p. 99. 
Hyla (Centrotelma) geographica, Burmeist. Erliuter. p. 99. 
Tongue subcircular, entire or slightly nicked, adherent. Vome- 
rine teeth between the very large choanz, in two series, forming 
