r \ 



Fig. 4. Hog-nosed Snake (Spreading Adder, Hissing AdderJ. Hetcrodon contortrix. 

 Characteristic among the local serpents in its ability to flatten the head and neck to 

 wide extent and emit sharp hisses. If further alarmed, it rolls upon its back and 



feigns death. It seldom attempts to bite. 



Fig. 5. (Lower) Black Hog-nosed Snake. A dark variation of the species figured 



above. The typical form is more frequent in sandy places, while black specimens 



frequent elevated areas. 



