2. RANA. 13 



Toes rather more than half webbed ; tibio- 

 tarsal articulation reaching the tip of the 

 snout, or nearly so far 81. macularia, p. 60. 



Toes half webbed ; tibio-tarsal articulation 



reaching the eye 82. malabarica, p. 60. 



Toes nearly entirely webbed ; tibio-tarsal 



articulation reaching the eye ; head large 81. ciirtijjes, p. 61. 



Toes nearly entirely webbed ; head mode- 

 rate 78. margariana, p. 58. 



5. Tips of fingers and toes dilated into regular disks, 



a. Vomerine teeth between the choanae. 

 Femoro-tibial articulation reaching the tym- 

 panum 93. jerboa, p. 67. 



Two rather indistinct metatarsal tubercles ; 



tympanum two thirds the size of the eye : 



hind limbs with dark cross-bars 85. alticola, p. 62. 



Two very distinct metatarsal tubercles; 



tympanum two thirds the size of the eye ; 



hind limbs not cross-barred 88. Icrefftii, p. 64. 



Two metatarsal tubercles, the inner very 



prominent and large ; hind limbs with 



dark cross-bars 89. U/tleri, p. 65. 



One metatarsal tubercle ; hind limbs not 



cross-barred 90. erythrcea, p. 65. 



One metatarsal tubercle ; disks of fingers 



half the size of tympanum 91. chalconota, p. 66. 



j3. Vomerine teeth extending beyond the level of the 

 hinder edge of the choanse. 

 Interorbital space as broad as the upper 

 eyelid ; tympanum three fourths the size 



of the eye . 86. temporalis, p. 63. 



Interorbital space rather narrower than the 



upper eyelid . 87. papiia, p. Q4:. 



Tympanum two thirds the size of the eye . 92. arfaki, p. 66. 



2. No glandular lateral fold. 



a. Vomerine teeth not extending beyond the level of the 

 hinder edge of the choanae. 



Tympanum half the \^idth of the eye ; toes 



nearly entirely webbed ; disks very small 73. andersonii, p. 55. 

 Tympanum not quite two thirds the width 



of the eye ; toes hardly half webbed . . 97. luctuosa, p. 68. 

 Tympanum nearly as large as the eye ; toes 



nearly entirely webbed 101. celehensis, p. 70. 



Tympanum two fifths the diameter of the 



eye ; toes very broadly webbed ; head [p. 464. 



moderate 101 a. latopalmata, 



