THE 



BOOK 



PLATE CXIII 



COMMON" HOG-NOSED SNAKE, Helcrodon platyrliiiius. 



I lu- three species of Helcrodon are characteristic in having a sharply upturned snout, and, owing to peculiar haliits. \\Tien 

 annoyed they il.itteii the head and neck to a great extent and hiss loudly. Their hostile airs have placed them in bad repute, yet they 

 are entirely harmless and seldom attempt to actually bite. They feed entirely upon loads anil frogs 



BLACK HOG-NOSED SNAKE. Hrt<-r,ln plityrhinus nigrr 

 The habitat embraces the Eastern and Central States, as doe* that O.' the typical form 



