CHECKLIST OF REPTILES OF ]MEXICO 55 



Interparietal nearly as large as ear opening, or larger, much larger than 

 any other dorsal head scale; no enlarged auricular lobules; no patch of 

 enlarged scales on rear of femur Callisaurus (p. 85) 



14. No complete transverse gular fold, or if so body and tail compressed and 



dorsal scales nearly imiform, large, no more than 75 from interparietal to 



rear of thighs 15 



A complete transverse gular fold, marked by granular or reduced scales, 

 much smaller than those preceding or following fold; dorsal scales very 

 small, or at least not uniformly large and as few as 75 from interparietal 

 to rear of thighs (except Uta squamata); body and tail flattened, never 

 compressed even slightly 16 



15. A gular fold usually present; lateral scales granular; body and tail somewhat 



compressed Sator (p. 139) 



Gular fold never present; lateral scales not granular in those species with 

 compressed tail Sceloporus (p. 105) 



16. Interparietal very large, about as large as or larger than ear opening 18 



Interparietal very small, a great deal smaller than ear opening 17 



17. Two scales bordering mental posteriorly between infralabials; head very broad, 



neck narrow Crotaphytus (p. 91) 



Three or more scales bordering mental posteriorly between infralabials; head 

 elongate, neck not so sharply defined Qambelia (p. 93) 



18. Dorsal scales all small, granular, smooth, very little larger than lateral scales; 



enlarged supraoculars in more than one row; one or more blackish bars 



across shoulders; size frequently over 75 mm. snout to vent 19 



Dorsal scales, at least toward middle of back, larger than lateral scales, keeled; 

 enlarged supraoculars in one row; no blackish bars across shoulders; size 

 less than 75 mm. snout to vent 20 



19. Caudal scales smaller than ventrals on body, not mucronate; three or four 



black bands across body Petrosaurus (p. 90) 



Caudal scales large, mucronate, much larger than ventrals on body; a single 

 narrow black band across shoulders Streptosaurus (p. 91) 



20. A longitudinal dorsolateral line or dermal fold, usually with some enlarged 



scales on it; usually a second, lateral fold; no small, rounded blue blotch 



behind axilla; frontal divided or not Urosaurus (p. 140) 



No longitudinal dorsolateral dermal fold; often a smaU, rounded, dark blue 

 blotch behind axilla; frontal always divided Uta (p. 147) 



Genus ANOLIS Daudin 



Anolis Daudin, Histoire naturelle gen^rale et particuliftre des reptiles, year X 



(1802), pp. 50-51.— Barbour, Bull. Mus. Comp. Zool., vol. 78, 1934, pp. 



121-155. 

 Dactyloa Wagler, Natvirliches System der Amphibien, 1830, p. 148 (type, Anolis 



viridis Wied). 

 Tropidopilus Fitzinger, Systema reptilium, 1843, p. 66 (type, Anolis fusco- 



auraius d'Orbigny, monotype). 

 Trachypilus Fitzinger, op. cit., p. 67 (type, Anolis sagraez Dumdril and Bibron). 

 Pristicercus Fitzinger, op. cit., pp. 07-68 (type, Dactyloa biporcata Wiegmann). 

 Ctenocercus Fitzinger, op. cit., pp. 17, 68 (type, Dactyloa buUaris Wagler — Anolis 



carolinensis Linnaeus). 

 Gastrotropis Fitzinger, loc. cit. (type, Dactyloa nebulosa Wiegmann). 

 Coccoessus Cope, Proc. Acad. Nat. Sci. Philadelphia, 1862, p. 178 (type, Anolis 



pentaprion Cope). 



