Contents 



CBAPTBR 



XVII. THE HORNED LIZARDS; Genus Pbrynosoma 



A Genus of Lizards that are Most Commonly 



Known as the Horned "Toads" . 



XVIII. THE PLATED LIZARDS AND SNAKE-LIKE SPECIES 

 The Families Anguidce and Aniellidce, Embracing 

 the North American Genera Gerrbonotus 

 Plated Lizards, Opbisaurus Glass "Snake" 

 and Aniella Ground "Snake" . 

 XIX. THE BEADED LIZARDS; Family Helodermatidce 



A Family Composed of but Two Species The Gila 

 Monster and the Mexican Beaded Lizard 

 Both of the Genus Heloderma. Descriptions 

 of the Species Their Habits 

 XX. THE FAMILY Xantusiida 



A Small Family of Diminutive Lizards Five 



Species Inhabit Southwestern North America 



XXI. THE STRIPED LIZARDS OR "RACE RUNNERS"; 



Family Teiida Genus Cnemidopborus 

 XXII. THE WORM-LIKE LIZARDS 



The Families Eucbirotidce and Ampbisbaenida, 

 Embracing the Most Degenerate of the Liz- 

 ards Descriptions of the North American 

 Species 



XXIII. THE SKINKS OR SMOOTH-SCALED LIZARDS; Family 



Scincidce 



Small, Glossy-scaled Lizards of a Large 

 Family, Represented in North America by 

 Two Genera and Fifteen Species 



'43 



160 



169 



178 

 184 



190 



'95 



PART IV: THE SNAKES 

 Order OPHIDIA 



XXIV. CLASSIFICATION OF THE NORTH AMERICAN SNAKES 207 

 XXV. THE BLIND SNAKES; Family Glauconiidce, AND 

 THE DWARF BOAS; Family Boidce 

 A Few Northern Representatives of Tropical 



Families. 209 



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