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. 
A TAIL PIECE, 
