CLA SSIFICA TION OF VER TEBRA TA 27 



nicked feebly. No lateral fold. Limbs variable. Eyelids 

 wvll developed. Cosmopolitan. 



Cyclodus (Tiliqua), Scincns, Trachysaurns, etc. L>ovk*.ccs 

 The following five families are composed of degraded forms 

 of various descent, leading mostly a burrowing, subterraneous 

 life. Limbs entirely absent, or the posterior pair reduced to 

 small flaps; girdles correspondingly reduced. Without post- 

 orbital, postfronto-squamosal, and supratemporal arches. Body 

 make-shaped or worm-like. 



13. A ndytropidae. Degraded Skinks. Teeth hook-shaped. 

 )steoderms present. Eyes and ears concealed. No limbs, 

 'remaxilla single. 



Africa and Mexico. 



Anelytropsis in Mexico. Feylinia and Typhlosaurus in 

 Africa. 



1 4. Dibamidae. Degraded Skinks. Premaxilla double. No 

 )luinella cranii. No limbs, except the males, in which the 

 ind-limbs are represented by a pair of flaps on the side of the 

 ms. Eyes and ears concealed. Teeth hook-shaped. Body 



rorm-like. With cycloid imbricating scales. 



Dibamus in New Guinea, Moluccas, Celebes, Nicobars. 



15. Anicllidae. Degraded Anguidae ; see Family No. 5. 

 To limbs. Premaxilla single. No squamosal bone. No. 



columella crann. Eyes and ears concealed. Body snake-like. 

 Aniella in California. 



16. Amphisbaenidae. Fore-limbs only or no limbs at all. 

 To columella cranii. Eyes and ears concealed. Pleuro- or 



icrodont. Worm-like with annular skin-segments. 



America including Antilles, Africa, Mediterranean countries. 

 Chirotes, Blanus, A mphisba ena, Trogonophis, etc. 



17. Pygopodidae. Pleurodont. Premaxilla single. Hind- 

 limbs reduced to short pentadactyle flaps ; fore-limbs absent. 



tody scaly without osteoderms. Eyes open, without movable lids. 

 Australia and New Guinea. 



Pygopus, Lialis, etc. 

 3. Sub -order CHAMAELEONTES, Wiegmann. Stereo- 

 3pondylous. Procoelous. Without columella cranii. No 

 tympanum. Acrodont. Limbs well developed, fingers and 

 toes arranged in opposing, grasping bundles of two and three. 



