214 



LACERTILIA. 



(Kreuzotter). Common Viper, distinguished by the black-brown zigzag band 

 on the back. Found in the mountain forests of Europe. 



Fam. Crotalidee. With a pit between the eyes and nose. Crotalux divrixsus 

 L., Rattlesnake of south-east of North America ; C. horridns L. South America. 

 Bothrops atrox L. Brazil. 



FIG. 640. Nydropkig Mcolor (rgne 



FIG. 6il.Pygopus (Bipes) lepidopus (rfegne 

 animal). 



Order 2. SAURII * (LACEETILIA) LIZARDS. 



Plagiotrema with pectoral girdle and sternum, usually icith tympanic 

 cavity and movable eyelids; with a non-extensible mouth and with 

 urmary bladder. 



The Lizards always have an elongated and sometimes a snake-like 

 body. As a rule there are four extremities, which, however, scarcely 



* Tiedcmann, " Anatomic und Naturgeschichte der Drachen." Nurnberg, 1811. 

 J. E. Gray, " Catalogue of the specimens of Lizards in the Collection of the 

 British Museum." London, 1845. 



Fr. Leydig, " Die in Deutschland lebenden Arten der Banner." TUbingen, 1872. 



