﻿CONTENTS 



Phrynosoma (Continued) 



PACE 



platyrhinos (Desert Horned Toad) 421 



goodei (Sonoran Horned Toad) 4-26 



m'callii (Flat-tailed Horned Toad)._._ 428 



modestum (Round-tailed Horned Toad) _ 430 



Family 4. Anguid^e 433 



14. Gerrhonotus 434 



principis (Northern Alligator Lizard) 437 



caeruleus (Burnett's Alligator Lizard) 440 



palmeri (Mountain Alligator Lizard) 445 



multicarinatus (San Lucan Alligator Lizard).— 448 



scincicauda 



scincicauda (Western Alligator Lizard) 450 



webbii (San Diegan Alligator Lizard) 45 5 



kingii (Sonoran Alligator Lizard).— _ 461 



Family 5. Anniellid;e 464 



15. Anniella 464 



pulchra (Silvery Footless Lizard) 465 



nigra (Black Footless Lizard) . 467 



Family 6. Helodermatid^e 470 



16. Heloderma 471 



suspectum (Gila Monster). 471 



Family 7. Xantusiid^e 476 



17. Xantusia 476 



vigilis (Desert Night Lizard) 477 



gilberti (San Lucan Night Lizard) 482 



henshawi (Henshaw's Night Lizard) 484 



riversiana (Island Night Lizard) 486 



Family 8. Teiwje 489 



18. Cnemidophorus 489 



perplexus (Seven-lined Whip-tail Lizard) 495 



disparilis (Tiburon Island Whip-tail Lizard) 497 



gularis (Sonoran Whip-tail Lizard) 499 



labialis (Striped Whip-tail Lizard) — 504 



maximus (Giant Whip-tail Lizard) 506 



tessellatus 



tessellatus (Desert Whip-tail Lizard) 508 



mundus (California Whip-tail Lizard) _ 516 



stejnegeri (Stejneger's Whip-tail Lizard) 519 



