4. bufo. 283 



fold ; subarticiilar tubercles of toes 



double t 19. calamita, p. 203. 



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 



"of the eye; belly almost entirely smooth 20. angusticeps, p. 300. 

 Tympanum distinct : no tarsal fold ; skin 



remarkably rough 37. talerosus, p. 304. 



Tympanum hidden ; no tarsal fold . . . 38. taitanus, p. 305. 



** Toes at least half webbed. 



No tarsal fold ; subarticular tubercles of 



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



A tarsal fold ; subarticular tubercles of 



toes double 21. htastu, 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. mauritaniens, p. 298. 



No tarsal fold ; subarticiilar tubercles of 



toes simple 28. lenguelensis, p. 299. 



No tarsal fold ; subarticular tubercles of 



toes simple : a fold across the occipital 



re oioii 30. olivaeeus, p. 300. 



No tarsal fold ; subarticular tubercles of 



toes double 36. vulgaris, p. 303. 



y. Tympanum hidden 39. sikJcimensis, 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. himalayanus, p. 305. 



Cranial ridges very distinct ; tympanum 

 at least two thirds the width of the 

 eye 41. mehmostictus, p. 306. 



Cranial ridges very distinct : tympanum 



very small 42. mierotympanum, 



[p. 307. 



I ofpel of them ; these tubercles are never all double. By "tubercles double" 

 I mean that at least these under the last phalanges of the fourth toe are thus 

 disposed. 



