COMMON VIPER. 75 



I have to add a fourth variety, from the specimen in 

 my possession, already mentioned, which I obtained from 

 Hornsey Wood. The ground-colour was of an uniform 

 dirty white, and all the markings were of a deep full 

 black. It was, when living, one of the most beautiful of 

 the species I have ever seen, and offers a remarkable 

 contrast to the black variety. 



