COMMON VirER. 



01 



SQUAMATA. 

 (O/'/l/DlA.) 



VI PER AD JR. 



. 



• • • 



i ■ 



. Y 







Genus, Pelias. Merr. 



Generic Character. — Head depressed, oblong-ovate, somewhat compressed be- 

 fore, and wider behind the eyes; vertex covered with scuta; no pit between the 

 nostrils and eyes ; tail with double plates beneath. 



COMMON VIPER. 



ADDER. 



Pelias Berus. 



Specific Character. — Brown, with a series of confluent rhomboidal black spots 

 along the back. 



