REPTILIA. 307 



SemiopJiorns Wagl., Fitz., St'tmia Cuv., DuM. and Bibr. 

 Scales rliombic, keeled. Membrane of tympanum superficial. Throat 

 of males with a very large dewlap, pendulous, folded; of females, 

 with the skin tense. Tail slender, very long. 



Sp. Semiojihoi'us pondicerianus Wagl., Sitana ■pondiceriayia Cuv., R. Ani., 

 sec. edit. PI. 6, fig. 2, Guekin Iconogr., Rept. PI. 10, fig. 2. 



h) With all the feet pentadactylous. 



* With sides of trunk expanded. 



Draco L. Canine teeth large, subulate; molar triangular, with 

 margin trilobed. A duplicature of skin on each side of the body, 

 supported by the anterior false ribs, which are elongate, straight. 

 Throat furnished with a middle pendulous dewlap, long in males, 

 and two others lateral, small. Tail long, slender ; small imbricate 

 scales. 



Flying lizard or dragon. This genus contains small lizards from the 

 Indian Archipelago, of which also a single species occurs on the continent 

 of the East Indies. They live in trees and feed on insects. 



Compare on the anatomy F. Tiedemann Anatomie und Natiir-geschichte 

 des DracJiens. Mit 3 Kupfert., Niirnburg, 181 1, 4to; on the species of 

 this genus, besides Dumeril and BiBRON, Schlegel Ahhild. neuer AmpJii- 

 iien, pp. Si — 96, Tab. 24, may be consulted. 



Sp. Draco viridis Daud. (and Draco fascus ejusd.), Draco volans L. (and Dr. 

 prcepos L.), Daud. Rept. iii. PI. 41, Tiedemann 1. 1. Tab. i, Schlegel 1. 1. 

 fig. i; — Draco fimbriatiis Kuhl, Guek. Iconogr., Rept. PI. 10, fig. i; both 

 from Java and Sumatra ; the last is the largest of known species. In some 

 the tympanic membrane is concealed under the scaly skin, as in Draco 

 lineatus Daud., Draco volans Blumenb., Abb. Naturh. Gegenst. No. 98, 

 ScHLEG. 1. 1. fig. 5. From these species Wiegmann forms the genus 

 Dracunculus. I have not observed in a single specimen that the fore limbs 

 are attached to the parachute, as is stated by Seba in the description of 

 a figure in his work (i. Tab. 102, fig. 2). On this character Draco p^-cepos 

 L. rests, 



■»* ']^ii]i sides of trunk not expanded. 



a) Membrane of tympanum conspicuous. 



Calotes Cuv. Head scaly. Back crested. Throat lax, pen- 

 dulous like a sac. Tail very long, gracilescent. 



Calotes DuM. and Bibr. Scales of back equal, arranged in oblique 

 rows. Jugulum not folded. 



Sp. Calotes opMomachus Merr., Lacerta calotes L., Seba Thes. i. Tab. 93, 

 fig. 2, Tab. 95, figs. 3, 4, Lac. Qiiadr. orip. et Serp. i. PI. 19, Daud. hi. 



20—2 



