CONTENTS 



PAGE 



H. Sator 25+ 



angustus (Santa Cruz Island Sator) 256 



grandaivus (Ceralbo Island Sator) 259 



12. Sceloporus 261 



scalaris (Orange-sided Swift) 268 



graciosus 



graciosua (Sage-brush Swift) . 273 



gracilis (Mountain Swift) 280 



vandenburgianus (Southern Mountain Swift) 286 



eonsobrinus (Striped Swift) 290 



elongatus (Stejneger's Blue-bellied Lizard) 295 



occidentalis 



occidentalis (Pacific Blue-bellied Lizard) 297 



biseriatus (Western Blue-bellied Lizard) 304 



taylori (Tenaya Blue-bellied Lizard)_ . 315 



becki (Channel Island Blue-bellied Lizard) . 318 



jarrovii (Yarrow's Scaly Lizard) . 321 



poinsettii (Mexican Scaly Lizard) 326 



magister (Desert Scaly Lizard) 329 



rufidorsum (Bclding's Scaly Lizard).— 338 



monserratensis (Monserrate Island Scaly Lizard) 342 



lineatulus (Santa Catalina Island Scaly Lizard) 345 



zosteromus (San Lucan Scaly Lizard) . 348 



orcutti (Dusky Scaly Lizard)- 352 



licki (Painted Scaly Lizard) 356 



clarkii (Arizona Scaly Lizard) 359 



13. Phrynosoma 364 



douglassii 



douglassii (Pacific Short-horned Horned Toad) 368 



ornatissimum (Eastern Short-homed Horned Toad) 377 



hernandesi (Arizona Short-homed Horned Toad) 382 



ditmarsi (Hornless Horned Toad) „ 386 



blainvillii 



blainvillii (Blainville's Homed Toad) 388 



frontale (California Horned Toad) . 395 



cerroense (Cerros Island Horned Toad) 40I 



coronatum (Lower California Horned Toad) 403 



solare (Regal Horned Toad) „ 4O6 



cornutum (Texas Horned Toad) 4-09 



