247 



2. Ear-opening as large as the palpebral disk, 

 f Auricular lobules present. 



a. 2429 scales round the body; 6070 



lamellae under the fourth toe 93. L. iridescens p. 252. 



b. 26 36 scales round the body; 40 60 



lamellae under the fourth toe 94. L. cyanurum p. 253. 



c. 32 44 scales round the body; 40 45 

 lamellae under the fourth toe; fronto- 



parietal as long as broad 95. L. mivarti p. 255- 



|t No auricular lobules; frontoparietal more 



long than broad 96. Z. mehelyi p. 256. 



II. 40 or fewer lamellae under the fourth toe. 



1. Interparietal fused. 



a. 28 scales round the body, dorsals with 

 2 keels; 38 lamellae under the fourth 



toe; no auricular lobules 97. Z. callistictum p. 256. 



b. 36 40 scales round the body, smooth, 

 sometimes with 2 or 3 keels; 3038 

 lamellae under the fourth toe; auricular 

 lobules absent or small; the hind limb 



does not quite reach the elbow 98. Z. battdini p. 257. 



c. 34 36 scales round the body , dorsals 

 with 2 5 sharp keels ; 34 40 lamellae 

 under the fourth toe; auricular lobules 

 present; the hind limb reaches the axilla 



or the shoulder 99. Z. tropidolepis p. 258. 



d. 30 34 smooth scales round the body; 

 33 40 lamellae under the fourth toe; 



auricular lobules present IOO. Z. pallidiceps p. 259. 



2. Interparietal distinct. 



a. 30 40 smooth scales round the body; 

 35 38 lamellae under the fourth toe; 

 auricular lobules present; ear-opening a 



little larger than the palpebral disk . . . IOI. Z. atrocostatum p. 259. 



b. 36 40 scales round the body, smooth or 

 dorsals with 5 keels; 32 40 lamellae 

 under the fourth toe ; no auricular lobules; 

 ear-opening much larger than the palpe- 

 bral disk IO2. Z. nigrum p. 260. 



B. Frontal not or slightly longer than the prae- 

 frontal. 

 36 scales round the body 103. Z. parietale p. 261. 



