8. LYGOSOllA. 215 



Dorsal scales smooth or nearly 30 ; no 



supranasals ; au enlarged scale on the 



heel 34. smaragdinum, p. 250. 



Dorsal scales keeled, nuchals smooth or 



very indLstiuctly keeled ; supranasals 



present 35. olivaeeum, p. 251. 



Dorsal and nuchal scales strongly keeled ; 



supranasals present 36. vittatum, p. 252. 



IV. Limbs weU developed. Lower eyelid with an undivided trans- 

 parent ' disk. Xo supranasals ; rostral forming a suture with 

 the frontonasal. One or more pairs of enlarged nuchals. 

 {Liolepisma, D. & B.) 



A. Limbs, both pairs pentadactyle. 



1. One or two pairs of praeanal scales considerably enlarged. 



a. Frontonasal at least as long as broad. 



'■D 



(I. Digits more or less dilated; fourth toe little longer 

 than third. 



* 



Five supraoculars ; ear-opening small. 



38 scales round the body 37. anolis, p. 253. 



30 scales round the body 38. virens, p. 254. 



** Four supraoculars ; ear-opening large. 



24 scales round the body 39. semperi, p. 254. 



/3. Digits not distinctly dilated ; fourth toe much longer 

 than third ; ear-opening large. 



* Prtefrontals forming a median suture. 



^o 



Five supraoculars, first very small ; 24 



scales round the body 40. pulchellum, p. 254. 



Four supraoculars ; 30 scales round the 



body 41. vulcanium, p. 255. 



** Frontonasal in contact with the frontal. 



26 scales round the body 42. noctua, p. 256, 



6. Frontonasal broader than long. 



a. Rostral forming a straight suture with the frontonasal. 



* Frontoparietals two. 



t Ear-opening smaller than the eye-opening. 



22 to 24 scales round the middle of the 

 body ; ear-opening smaller than the 

 transparent palpebral disk 43. silcldmense, p. 257. 



' Occasionally opaque. 



