BIPES REPTILES. 353 



without nails ; body ash-coloured above, with four longitudinal 

 brown streaks, paler below. Daud. iv. pi. 57- 



S. monodactylus. (Lacerta anguina, Lin.) One-toed Eft. Feet 

 extremely thin and short, composed of one toe, without a claw ; 

 tail three times as long as the body. 15 inches long. Inhabits 

 Cape of Good Hope Skaiv, iii. pi. 85. 



Gen. 26. BIPES, Lacep. 



No fore feet, the scapulars and clavicles being concealed un- 

 der the skin ; feet slightly divided, or without divisions. 



B. apus. (Lacerla apus, Gmel.) Head and body without distinct 

 separation ; tail long and round ; scales small, imbricated ; two 

 feet near the anus, with slight divisions. Inhabits shores of the 

 Volga Cuv. Reg. An. ii. 56. 



B. Gronovii. (Anguis bipes, Lin.) Dorsal scales dotted with brown ; 

 tail shorter than the body ; two feet, round, and without divi- 

 sions. Cuv. Reg. An. ii. 56. 



Gen. 27. CHALCIDES, Daudin. 



Body excessively elongated ; feet four, short and distant, toes 

 varying according to the species ; scales not imbricated, but 

 forming transverse bands or rings. 



C. tridactylus , Three-toed Chalcides. Feet three-toed, short, and 

 without claws ; tail a little longer than the body. Daud. iv. pi. 

 58, fig. 3. 



C. monodactylus, (L. anguina, Lin.) One-toed Chalcides. Feet 

 short and very slender, with one toe ; tail longer than the body, 

 cylindrical. Daud. iv. 370. 



Gen. 28. CHIROTES, Cuv. 

 Hind feet wanting. In other respects resembling the preceding. 



C. lumbricoides. (Bipede cannele, Lacep.) Hind feet wanting; 

 fore feet with five toes, of which four are clawed and one naked ; 

 sides of the body longitudinally furrowed. 8 or 10 inches long. 

 Inhabits Mexico. Lacep. i. pi. 41. 



ORDER III OPHIDIA. 



Heart with two auricles ; body much elongated, cylindrical, 

 destitute of feet, generally covered with scales. 



The Ophidian reptiles, (so named from o$/c, a serpent) have no feet; and in 

 consequence that division to which the name of Reptiles is more properly applied. 

 They are readily known from this character ; from their cylindrical form and elon- 

 gated body ; by the wonderful flexibility of their dorsal spine ; and by their craw- 

 ling with the assistance of the large scaly plates on their belly. 



Cuvier divides the order into three families. In ti\ejirst t or Anguines, the teeth and 

 VOL. I. Z 



