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-Nosed 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 Moccasin, 



FACING PAGE 



Zamenis constrictor flaviventris . . 251 



Drymobius margaritiferus 353 



Spilotes corais couperi 253 



Coluber obsoletus 255 



Coluber quatuorlineatus 255 



Ophibolus getulus 253 



Dromicus angulifer 258 



Helicops angulatus 260 



Liophis cobella 260 



Heterodon platyrhinus 263 



Heterodon nasicus 262 



Leptognathus catesbyi 264 



Dryophis mycterizans 269 



Oxybelis acuminatus 269 



Hydrus platurus 271 



Platurus shistorhynchus 271 



Elaps fulvius 274 



Elaps marcgravii 274 



Elaps marcgravii 274 



Brachyaspis curtus 276 



Pseudechis porphyriacus 276 



Naja tripudians 281 



Naja tripudians 281 



Naja haje 285 



Naja bungarus 285 



Naja haje 292 



Sepedon hamachates 296 



Sepedon hamachates 296 



Naja and Vipera 299 



Cerastes vipera 301 



Crotalus adamanteus 301 



Causus rhombeatus 303 



Causus rhombeatus 303 



Vipera berus 306 



Vipera russellii 306 



Bitis gabonica 308 



Bitis nasicornis 308 



Bitis arietans 310 



Cerastes cornutus 310 



Cerastes cornutus 317 



Cerastes vipera 317 



Lachesis and Crotalus 319 



Ancistrodon piscivorus 322 



Ancistrodon bilineatus 322 



Lachesis schlegelii 322 



Ancistrodon piscivorus 324 



