1 I ivi ir Ik \ 1 t I Z Ai I I. ll s, t I 



AFKICAN PUFF-ADDER. 

 Horses die within a few hours of being bitten by this serpent. 



Mij pcnnisslon of i lie ^t'w I'ork Zoological Soaeti/. 



DIAMOKD-BACK RATTLE-SXAKE. 



One or morejoints are added to tlie " rattle" each successive year. 



595 



