620 REPORT OF NATIONAL MUSEUM, 1898. 



§ Frontoparietal plate double. 



Digits, 5-5 Liolepisma Dumeril and Bibron. 



Digits, 3-3 Tridentxlus Cope. 



Digits, 1-2 Furcillus Cope. 



nil Tympanic meatus closed. 

 ^ Frontoparietal single. 



Digits, 5-5 HapJoscincns Cope. 



§§ Fronto])arietals distinct. 



Digits, 4-4 Tetradactyhis Cnvier. 



Digits, 3-3 Hemiergis Wagler. 



Digits. 2-2 Chelomeles Dumeril and Bibron. 



tt Lower eyelid scaly. 



II Tympanic meatus not closed. 

 vS Frontoparietal single. 



Digits, 5-5 Lyf/osoma Gray. 



§ Frontoparietals two. 



Digits, 5-5 Homolepida Gray. 



Ijjj Tympanic meatus closed. 

 § Frontoparietal single. 



Digits, 5-5 Cophosc'mcus Peters. 



Digits, 3-1 Inomaloptis Dumeril and Bibron. 



$§ Frontoparietals distinct. 



Digits, 5-5 Naniiosciticiis Giintlier. 



Digits, 3-3 Siaphos Gray. 



Digits, 2-2 Dimeropiis Cope. 



Digits, 1-1 Coloscincus Peters. 



Limbs wanting Ophiosdncus Peters. 



*** Eyelids immovable, transjjarent ; covering the eye. 

 t Supranasals i)reseut. 



Two frontoparietals ; ear exposed ; digits 5-5 Panaspis Cope. 



tf No supranasals. 



II Two frontoparietals (ear not closed). 



Digits 5-5 Ahlepharus Fitzinger. 



Digits 4-4 Miculia Gray. 



Digits 3-3 Phaneroph Fischer. 



Digits 2-3 Lerista Gray. 



nil One frontoparietal. 

 § Ear exposed. 



Digits 5-5 CruptoMepharus Wiegmann. 



Digits 4-4 Menetia Gray. 



Digits 4-4 Blepharactisis Haliowell. 



§^ Ear concealed. 



Digits 5-5 Phpharosteres Stoliczka. 



*** Eyelids movable; claws retractile into a sheath. 



Digits 4-5 BisteUa Gray. 



2. Tympanum exposed and superficial. 



Head normal Tropidophorus Dumeril and Bibron. 



Head a bony casque, well separated from the neck. 



Triholonotiis Dumeril and Bibron. 

 AAA. Palatine bones separated on the median line; snpranasal shields present. 

 Nostril pierced in thfs nasal; pterygoid bones toothed; limbs pentadactyle; the 



digits not denliculated laterally Einneces Wiegmann. 



Nostril pierced in a very small nasal, between the rostral, the first labial, the 

 snpiauasul and sometimes a postnasal; palate toothless; digits 

 5-5 ; limbs short Senira Gray. 



