Sides with light bars; Cal. 



Gerrhonotus coeruleus coeruleus (Wiegmann) Blue Alligator 



Lizard 

 {Gerrhonotus hurnettii of Cope) 



28. No eyelids; pupils vertical in bright light 29. 

 With movable eyelids; pupils round, except in Cohonyx 37. 



29. Top of head with small, bead-Hke scales; Family GeWonidae Geckos 30. 

 Top of head with large, flat scales; Family Xantusiidae Night Lizards 



34. 



30. Toes not flattened or swollen; S. Florida (introduced) 



Gonatodes fuscus (Hallowell) Yellow'headed Gecko 

 Toes on hind feet flattened or swollen into pads 3L 



3L Each hind toe flattened and swollen throughout length, with the claw 



projecting from the end of the toe; male with a row of pores lengthwise 



along the rear of the inner side of the thigh; introduced into Florida 



Heviidactylus turcicus (Linn.) Leaf 'toed Gecko 



Each hind toe swollen at the tip, with the claw scarcely projecting be' 



yond the end of the toe; no femoral pores 32. 



32. Swollen pad at tip of hind toe double, with the claw between the two 



parts of pad; with several rows of warts or tubercles along back and 

 sides; grayish or yellowish above, with dark markings; Cal. 

 Phyllodactylus tuherculosus Wiegmann Warty Gecko 

 With a single swollen pad at the end of each toe; back evenly scaled; 

 Florida 33. 



33. Back dark, with yellowish spots 



Sphaerodactylus cinereus Wagler Spotted Gecko 

 Back yellowish, with dark spots or lengthwise markings 

 Sphaerodactylus notatus Baird Reef Gecko 



34. With two rows of small plates above each eye; with sixteen lengthwise 



rows of plates on the belly; hind legs almost half as long as the tail; 

 on islands off the coast of Cal. 



X.antusia riversiana Cope Island Night Lizard 

 Supraoculars in one row; with fourteen or less rows of plates on the 

 belly; legs much shorter 35. 



35. With fourteen rows of plates on belly; back brown, marked with light; 



S. Cal. 



Xantusia henshawi Stejneger Boulder Night Lizard 

 With twelve rows of plates on belly; back yellowish, gray or brown, 

 with dark dots 36. 



36. With more than 42 granular scales across back; with a dark band along 



side of head through the eye; Ariz. 



Xantusia anzonae Klauber Arizona Night Lizard 

 With less than 42 granular scales across back; usually with a pale stripe 

 on each side from the region of the eye backward on to the area above 

 the shoulder; Utah to Cal. 



Xantusia vigiUs Baird Desert Night Lizard 



368 



