4. BUFO. 283 



fold ; subarticiilar tubercles of toes 



double t 1^- ccHamiia, p. 293. 



Tympanum very distinct, half tbe Tvidtb 



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. sumatramis, p. 295. 



Tympanum distinct, one third the width 



of the eye: belly almost en tii-ely smooth 29. an>justieeps, '^. 30U. 

 Tympanum distract : no tarsal fold ; skin 



remarkably rough 37. tuberosns, 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. htastii, p. 295. 



A tarsal fold ; subarticular tubercles of 



toes simple 2o. viridis, p. 297. 



A tarsal fold : subarticular tubercles of 



toes double ; first finger considerably 



lonsrer than second 26. mauritanicus, p. 298. 



Xo tarsal fold ; subarticnlar tubercles of 



toes simple 28. hengv.elensis, p. 299. 



Xo tarsal fold ; subarticular tubercles of 



toes simple ; a fold across the occipital 



region 30. oUvcicens, p. 300. 



Xo tarsal fold : subarticular tubercles of 



toes double 36. vidgaris, p. 303. 



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



B. Crown with bony ridges. 

 1. Xo parietal ridges. 



a. Orbito-tympanic ridges not much developed. 



Cranial ridges rather indistinct ; tym- 

 panum very small 40. hhrndaycnms, 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. microtymixtnum, 



[p. 307, 



t Most of them: these tubercles are never all double. Bv 'tubercles double" 

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

 disposed. 



