5. IXALUS. 95 
Tympanum about one third the size of 
the eye; toes less than one-third 
webbed; tibio-tarsal articulation reach- 
ime be youd Thowyer: . ais 6 tie se oteyen 19. punctatus, p. 104. 
Tympanum about one fourth the size of 
the eye; toes slightly webbed; tibio- 
tarsal articulation reaching the tip of 
DCS SEOT fs she ta -are Se Migetalecee aiaxe!s 20. tuberculatus, p. 104. 
b. Tympanum indistinct or quite hidden. 
a. Snout pointed. 
Toes nearly entirely webbed.......... 8. acutirostris, p. 99. 
B. Snout rounded. 
Tibio-tarsal articulation reaching the 
snout or somewhat beyond; toes 
webbed at the base; hinder side of 
Ghighs coloured io sais fies ores as Pe 4, hypomelas, p. 97. 
Tibio-tarsal articulation reaching beyond 
the eye; toes two-thirds webbed ; 
hinder side of thighs not coloured .. 13. femoralis, p. 101. 
Tibio-tarsal articulation not extending 
beyond the eye; toes half webbed ; 
hinder side of thighs not coloured.... 14. beddomit, p. 101. 
Tibio-tarsal articulation reaching beyond 
the eye; toes two-thirds webbed ; 
hinder side of thighs coloured ...... 15. variabilis, p. 102. 
Tibio-tarsal articulation reaching the eye; 
toes two-thirds webbed; hinder side 
of thighs coloured ................ 22. adspersus, p. 105, 
Toes barely half webbed; an indistinct 
tubercle at the base of the fourth toe. 16. cinerascens, p. 102, 
3. Skin of upper surfaces with large conical warts. 
Heel with a triangular dermal appendage. 10. schmardanus, p. 99. 
II. Fingers half webbed. 
Tympanum hidden.................. 25. bimaculatus, p. 106. 
_1. Ixalus.opisthorhodus. 
? Limnodytes ? phyllophila, Jerdon, Journ, As. Soe. xxii. p. 532, and 
Proc. As. Soc. 1870, p. 85. 
Ixalus opisthorhodus, Gunth. Proc. Zool. Soe. 1868, p. 484, pl. 37. f. 3. 
Tongue with a free pointed papilla in the anterior part of the 
median line. Snout subacuminate, prominent, about as Jong as the 
orbital diameter; canthus rostralis angular; loreal region flat, 
vertical ; nostril nearly equally distant from the eye and the tip of 
