4. BTTFO. 283 



fold J subartioular tubercles of toes 



double t 19. calamita, p. 293. 



Tympanum very distinct, half the width 



of the eye ; a tarsal fold ; subarticular 



tubercles of toes simple 20. raddii, p. 294. 



Tympanum distinct, one fourth the width 



of the eye ; a tarsal fold 22. sumatranus, p. 295. 



Tympanum distinct, one third the width 



oftheeyej beUy almost entirely smooth 29. angiistioe^ps, p. 300. 

 Tympanum distinct ; no tarsal fold ; skin 



remarkably rough 37. tuberosus, p. 304. 



Tympanum hidden ; no tarsal fold ... - 38. taitaniis, p. 305. 



** 'Toes at least half webbed. 



No tarsal fold ; subarticular tubercles of 



toes simple ; snout projecting 8. beddotnii, p. 289. 



A tarsal fold ; subarticular tubercles of 



toes double 21. latastii, p. 295. 



A tarsal fold ; subarticular tubercles of 



toes simple 25. viridis, p. 297. 



A tarsal fold ; subarticular tubercles of 



toes double ; first finger considerably 



longer than second 26. mauritanicus, p. 298. 



No tarsal fold ; subarticular tubercles of 



toes simple 28. lenguelensis, p. 299. 



No tarsal fold ; subarticular tubercles of 



toes simple ; a fold across the occipital 



region ,...;. 30. oKvaceus, p. 300. 



No tarsal fold ; subarticular tubercles of 



toes double. . 36. vulgaris, p. 303. 



y. Tympanum hidden 39. sihUmensis, p. 305. 



B. Crown with bony ridges. 

 1. No parietal ridges. 

 a. Orbito-tympanic ridges not much developed. 

 Cranial ridges rather indistinct ; tym- 

 panum very small 40. himalayanm, p. 305. 



Cranial ridges very distinct ; tympanum 

 at least two thirds the width of the 



eye 41. melanostictus, p. 306, 



Cranial ridges very distinct ; tympanum 



very small 42. mierotymjianum, 



[p. 307. 



t Most of them; these tubercles are neyer all double. By "tubercles double" 

 I mean that at least those vmder the last phalanges of the fourth toe are thus 

 disposed. 



