CONTENTS 



Phrynosoma (Continued) 



PACE 



platyrhinos (Desert Horned Toad) . 421 



goodei (Sonoran Horned Toad) 426 



m'callii (Flat-tailed Homed Toad) +28 



modestum (Round-tailed Horned Toad) 430 



Family 4. Anguid;e 433 



14. Gerrhonotus ._ 434 



principis (Northern Alligator Lizard) 437 



coeruleus (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) _ 455 



kingii (Sonoran Alligator Lizard) 461 



Family 5. ANNIELLIDiE 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.^ 476 



17. Xantusia 476 



vigilis (Desert Night Lizard) 477 



gilberti (San Lucan Night Lizard) 482 



henshawi (Hcnshaw's Night Lizard) 484 



riversiana (Island Night Lizard).- 486 



Family 8. Teiid^ 489 



1 8. 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 



