-LIST OF ILLUSTRATIONS 



Blue Racer, 



Green Spotted Snake, 



Indigo Snake, 



Pilot Black Snake, 



Four-Lined Snake, 



King Snake, 



Grass Snake, 



South American Water Snake, 



Swamp Snake, 



Hog-Xosed Snake and Eggs, 



Texas Hog-Nosed Snake, 



Blunt-Headed Snake, 



Long-Nosed Tree Snake, 



Long-Headed Tree Snake, 



Yellow-Bellied Sea Snake, 



Ringed Sea Snake, 



Florida Coral Snake, 



South American Coral Snake, 



South American Coral Snake 



(Head), 

 Tiger Snake, 

 Australian Black Snake, 

 Two Phases of the Cobra, 

 Skeleton Hood of Cobra, 

 Head of Egyptian Cobra, 

 Head of King Cobra, 

 Egyptian Cobra or Asp, 

 South African Cobra; Ringhals, 

 Hood of the Ringhals, 

 Hindoo Snake-Charmer's Outfit, 

 Head of True Viper, 

 Head of Pit Viper, 

 Cape Viper, 



Head of the Cape Viper, 

 Common Viper, 

 Tic Polonga; Russell's Viper, 

 Gaboon Viper, 

 Rhinoceros Viper, 

 Puff Adder, 

 Horned Viper, 

 Horned Viper, 

 Common Sand Viper, 

 Skulls of Pit Vipers, 

 Head of Water Moccasin, 

 Head of Mexican Moccasin, 

 Head of Palm Viper, 

 Water JMoccasin, 



FACING PAGE 

 Zamenis constrictor flaviventris . . 251 



Drymobius margaritiferus 254 



Spilotes corais conperi 25-1 



Coluber obsoletus 355 



Coluber quatuorlineatus 255 



Ophibolus getulus 353 



Dromicus angulifer 058 



Helicops angulatus 259 



Liophis cobella 359 



Heterodon platyrhmus 263 



Heterodon nasicus 262 



Leptognathus catesbyi 263 



Drgophis mycterizans 370 



Oxybelis acnminatus 270 



Hydrus platurus 271 



Platurus shistorhynckus Qii 



Elaps fulvius 274, 



Elaps marcgravii 374, 



Elaps marcgravii 274 



Brachyaspis curtus S75 



Pseudechis porphyriacus 275 



iVaJo tripudians 284 



JVaja tripudians 284 



Naja haje 285 



Naja bungarus 285 



Naja haje 292 



Sepedon hasmachates 293 



Sepedon hcemachates 293 



Naja and Vipera 300 



Cerastes vipera 301 



Crotalus adamanteus 301 



Causus rhombeatus 304 



Causus rhombeatus 304 



Vipera berus 305 



Vipera russellii 305 



Bitis gabonica 308 



Bitis nasicornis 308 



Bitis arietans 309 



Cerastes cornutus 309 



Cerastes cornutus 318 



Cerastes vipera 318 



Lachesis and Crotalus 319 



Ancistrodon piscivorus 322 



Ancistrodon bilineatns 322 



Lachesis schlegelii 322 



Ancistrodon piscivorus 323 



