COMMON VIPER. 



61 



SQUAMATA. 

 (OPHID1A.) 



VIPER ADM. 



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. 



