214 LACERTILJA. 



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

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



Fain. Crotalidee. With a pit between the eyes and nose. Crotahm dim**//* 

 L.. Kattlcsnake of south-east of North America ; C. Itorridus L. South America 

 Bothrops atrox L. Brazil. 



FIG. 640. SydropUx bicolor (regne FIG. 641. Pygopus (Bipes) Jepidopits (regne 



animal). animal) . 



Order 2. SAUEII * (LACERTILIA) LIZARDS. 



Plagiotrema with pectoral girdle and sternum, usually with tympanic 

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

 urinary bladder. 



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

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



* Tiedemann, " Anatomie und Naturgeschichte der Drachen. " Niirnbei'g. 1 S 1 1 . 

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

 British Museum/' London. 1845. 



Fr. Leydig, " Die in Deutschlaud Icbenden Arten der Saurier." Tubingen, 1872 



