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 . . 351 



Drymobius margaritiferus 254, 



Spilotes corals couperi 254, 



Coluber obsoletus 255 



Coluber quatuorlineatus 255 



Ophibolus getulus 258 



Dromicus angulifer 25S 



Helicops angulatus 259 



Liophis cobella 259 



Heterodon platyrhinus 26-? 



Heterodon nasicus 262 



Leptognathus catesbyi 263 



Dryophis mycterizans 270 



Oxybelis acuminatus 270 



Hydras platurus 271 



Platurus shistorhynchus 271 



Elaps fulvius 274 



Elaps rnarcgravii 274 



Elaps rnarcgravii 274 



Brachyaspis curtus 275 



Pseudechis porphyriacus 275 



Naja tripudians 284 



Naja tripudians 284 



Naja haje 285 



Naja bungarus 2S5 



Naja haje 20 1 



Sepedon hwmachates 293 



Sepedon hcemachates 293 



Naja and Vipera 300 



Cerastes vipera 301 



Crotalus adamanteus 301 



Causus rhombeatus 304 



Causus rhombeatus 301 



Vipera berus 305 



Vipera russellii 305 



Bitis gabonica 308 



Bitis nasicornis 308 



Bitis arietans 309 



Cerastes cor nut us 309 



Cerastes cornutus 318 



Cerastes vipera 318 



Lachesis and Crotalus 319 



Ancistrodon piscivorus 322 



Ancistrodon bilineatus 322 



Lachesis schlcgelii 322 



Ancistrodon piscivorus ^23 



