16 RANID*. 



Tympanum half the size of the eye ; skin 



tubercular '25. delcclancUi, p. 31. 



Tympanum nearly as large as the eye ; skin 



smooth 28. ornata, p. 33. 



Tympanum two thirds or three fourths the 

 size of the eye ; back with longitudinal 

 glandular folds 29. adspersa, p. 33. 



Tympanum larger than the eye ; no longi- 

 tudinal folds 30. maltzanii, p. 34. 



C. Tips of fingers and toes more or less dilated. 



1. A circular flat gland below each thigh on its inner side. 



Tympanum hidden 9. guttulata, p. 21. 



Tympanum distinct ; first and second fingers 



equal 96 a. ulcerosa, p. 462. 



Tympanum distinct ; first finger not ex- 

 tending as far as second ; tibio-tarsal 

 articulation reaching beyond the ej'e . . 96 6. femoralis, p. 463. 



2. jSTo large gland below the thigh. 



a. First finger extending beyond second. 



A glandular lateral fold ; tips of fingers and 



toes simply swollen 79. elegans, p. 59. 



A glandular lateral fold ; tips of fingers and 

 toes dilated into regular disks ; beUy 

 smooth 80. alhilahris, p. 59. 



No glandular lateral fold ; tibio-tarsal arti- 

 culation reaching a good deal beyond the 

 tip of the snout 94. inguinalis, p. 67. 



6. First and second fingers equal. 



Toes half webbed ; tibio-tarsal articulation 



not reaching beyond the tip of the snout 73 a. hctsileana, p. 46U. 

 Toes three-fourths weighed ; tibio-tarsal 



articulation not reaching beyond the eye 73 6. curta, p. 461. 

 Toes half webbed ; tibio-tarsal articulation 



reaching beyond the tip of the snout . . 107 b. aspera, p. 465. 



c. First finger not extending as far as second. 



Tympanum more than half the diameter of 



the eye ; back smooth ^ 95. madagascariensis. 



Tympanum more than half the diameter of [p. 67. 



the ej e ; back granulate 96. granidata, p. 68. 



Tympanum half the diameter of the eye ; 



toes entirely webbed ; back smooth .... 96 c. cowanii, p. 463. 

 Tympanum half the diameter of the eye ; 



toes somewhat more than half webbed ; 



back with narrow glandular folds 107 «. plicifera, p. 464. 



