3545 LIZARDS — PETERS 5 



Eyelids absent, dorsal scales small and numerous, usually granular and not 



imbricate 3 



Eyelids present (or, when lacking, tlae scales of the body are arranged in 13-15 



rows and are broad, smooth, and imbricate) 9 



No adhesive pads on toes 4 



Toes with adhesive pads below 7 



Nails covered by a sheath of scales 5 



Nails uncovered, without a sheath Gonatodes 



Sheath of nail symmetrical, as seen from above (fig. \b) 6 



Sheath of nail asymmetrical, as seen from above (fig. la) . . . Sphaerodactylus 



Five scales in nail sheath (fig. 1 ^) Pseudogonatodes* 



Six scales in nail sheath (fig. \c) Lepidoblepharis 



Figure 1. — Nail sheaths: a, Sphaerodactylus, dorsal view; b, Pseudogonatodes, five scales; 

 c, Lepidoblepharis, six scales. Tail with rings of spiny scales: d, Alorunajaurus 

 annularis. 



10. 



Digits with two rows of transverse lamellae below throughout length ... 8 

 Digits with single row of lamellae or tubercles below, two large plates under 



expanded tip of digit Phyllodactylus 



Digits only partially dilated, ultimate phalanx compressed, arising from 



dorsum or dilated part of digit Hemidactylm*^ 



Digits totally dilated, ultimate phalanx not compressed but part of dilation. 



Thecadactylus 

 Top of head with granular or irregular flat scales, the largest usually arranged 



in semicircles over each eye; lacking a median frontal between the eyes; 



tongue usually fleshy and not extensible 10 



Top of head with regular flat plates; a median frontal between the eyes; 



tongue not fleshy although extensible and bifurcate 30 



Tail provided with spines arranged in rings 11 



Tail without spiny rings 14 



Tail cylindrical or compressed vertically, rings of spiny scales separated 



(fig. \d) 12 



Tail flattened in a horizontal plane, all caudal scales spiny .... Uracentron 



Known from both Colombia and Peru. 



