600 REPTILES. 



Genus U — TUAVEhVS.—Cuvier. 



Generic Character. — Head tumid ; body oblong ; scales email, smooth, 

 without any appearance of spines. 



Gemis 15.— CALOTES.— Cwp/e;-. 



Generic Character. — Scales on the body imbricated, with marginal edges ; 

 ridge of the back furnished with a longitudinal carina, extending to th« 

 middle of the tail. 



Genus m.—hOVHYRUS.—Dumeril. 



Generic Character. — Scales on the body, having the appearance of sha- 

 greeu dorsal carina prolonged upon the tail, which is compressed. 



Genus 17.— BASlhlSCU S.—Daudin. 



Generic Character. — Jaw-teeth strong, compressed, without any palate 

 teeth ; thighs with a row of spiracles ; skin on the neck loose, without any 

 pouch ; crests scalloped, supported by long bony apophyses like the fins of 

 fishes, extending from the bottom of the neck to the middle of the tail, 

 covered by thin translucent scales ; scales of the abdomen and tail small, 

 square. 



Basiliscus milratus. — The Mitred Basilisk. Plate Ixiii. fig. 5. Described, 

 vol. iv. p. 138. 



Genus IS. — DRACO. — Linnceus. 



Generic Character. — Tncisory teeth |_ canines '_ long and pointed ; molars 

 aZi triangular ; throat with a long gular pouch under it ; tail long and cari- 

 iiated ; no femoral spiracles ; nape of neck with a small dentation ; six false 

 ribs supporting a wing-shaped extension of the skin ; body covered with 

 imbricated scales. 



Draco Hneatus.— The Flying Dragon. Plate Ixiii. fig. 6. Described, vol. 

 iv. p. 144. 



Genus K.—IGV At; A.— Cuvier. 



Generic Character. — Head plated ; jaws with a row of compressed, tri- 

 angular, and seriated teeth ; with two small rows on the posterior margin 

 of the palate ; body and tail provided with small imbricated scales ; back 

 with a carina of pointed scales ; throat with an inflated, laterally compress, 

 ed, and pendulous appendage ; a row of femoral spiracles. 



Gemis 20.—POhYCHRUS.—Cuvier. 



Generic Character.— Head covered with small plates ; maxillary teeth 

 sharp and serrated, having small ones in the palate ; throat capable of infla. 

 tion and extension; back without a crest; body and tail with small scales. 



Genus 21 — ANOLIUS.— C?^!?cr. 



Generic Character.— CeneraWy provided with a gular pouch; teeth sharp 

 and serrated, with small ones in the palate ; claws greatly hooked ; tailsha- 

 greened with small scales. 



Section I.— Tail crested. 



