DBACO. Ill 



y'. A dorsal crest ; scales very 



large, subequal, irregular ; 



tail prehensile COPHOTIS, p. 117. 



8'. No dorsal crest ; a large rostral 



appendage, at least in the 



male CERATOPHORA, p. 118. 



e'. A dorsal crest ; a V-shaped 



gular fold ; a bony supra- 

 orbital arch LYRIOCEPHALUS, p. 121. 



f . A dorsal crest; an oblique fold 



in front of the shoulder. . . . JAPALURA, p. 129. 

 /3. Tympanum exposed, 

 a'. A strong fold across the 



throat GONYOCEPHALUS, p. 122. 



j3'. No fold across the throat ; 



dorsal scales unequal ; no 



gular pouch ACANTHOSAURA, p. 124. 



y. No fold across the throat; 



dorsal scales large, unequal ; 



males with a gular pouch . . SALEA, p. 131. 

 8'. No fold, or a very feeble one, 



across the throat; dorsal 



scales equal CALOTES, p. 132. 



b'. Body more or less depressed. 



a". Typanurn exposed ; males without 



callous praeanal scales CHARASIA, p. 144. 



b" . Tympanum exposed ; males with 



callous praeanal scales AGAMA, p. 146. 



c". Tympanum concealed PHRYNOCEPHALUS, p. 152. 



B. Femoral pores present. 



a. Tail long, round, feebly depressed, 



covered with small, equal scales. LIOLEPIS, p. 156. 



b. Tail with whorls of large, spinose 



scales UROMASTIX, p. 157. 



Genus DRACO, 

 Linn. Syst. Nat. i, p. 358, 1766. 



Body depressed, with a large lateral wing-like membrane, 

 folding like a fan, supported by the last five or six ribs which are 



Fig. 36. Heads of Draco maculatus and Draco dussumieri. 

 much produced. A gular appendage, and a lateral smaller one on 

 each side. Tympanum distinct or covered with scales. Tail long. 

 Iso femoral or praeanal pores. 



Distribution. The greater part of the Oriental region. 



