Key to the Indo- Australian genera. 



A. No femoral pores. 



I. A wing-like dermal expansion I. Draco, p. 68. 



II. No wing-like dermal expansion. 



a. Tympanum hidden. 



1. A dorsal crest. 



| No fold across the throat, neither in front 



of the shoulder; scales small 2. Aphaniotis, p. 88. 



If Scales very large, irregular; tail prehensile 3. Cophotis, p. 90. 

 HI An oblique fold in front of the shoulder. 4. Japahira, p. 92. 



2. No dorsal crest. 



Scales small, intermixed with large conical 



tubercles 5. Phoxophrys, p. 94. 



b. Tympanum distinct. 



1. Snout ending in a long compressed appendage 6. Harpesaurus, p. 96. 



2. Snout without appendage. 



t A strong fold across the throat. 



* Males with a gular sac; digits keeled 



inferiorly 7. Gonyocephalus, p. 99. 



** Males without gular sac; digits not 



keeled inferiorly 8. Lophocalotes,\>. 116. 



If No fold across the throat. 



a. Male with gular sac ; dorsal scales slightly 



unequal 9. Dendragama, p. 117. 



b. Male with gular sac; dorsal scales equal. 10. Calotes, p. 120. 



c. Male without gular sac; dorsal scales 



unequal II. Acanthosaura,^. 125. 



B. Femoral or praeanal pores present, at least in the 

 males. 



I. Neck with a large dermal collar \i.Chlamydosaurus,\>.\'2.f>. 



II. No large dermal collar. 



1. Body compressed. 



a. A dorsal crest ; throat with longitudinal folds ; 

 tail strongly compressed, crested; femoral 



pores present; toes lobate 13. Lophura, p. 128. 



b. A dorsal crest; tail round or slightly com- 

 pressed; femoral pores present; toes denti- 

 culated 14. Physignathus, p. 131. 



2. Body depressed. 



a. No dorsal crest; tail round; one or two 



praeanal pores, no femoral pores 15. Diporophora, p. 134. 



b. No dorsal crest; tail round; femoral pores 



present; skin of the sides expansible 16. Liolepis, p. 135. 



