382 CLASSIFICATION OF REPTILES. 



Family 5. SCINCID^. 



Feet and toes very short_, the latter simple and free ; 

 limbs sometimes rudimentary^ or one pair disappearing 

 externally ; tongue slightly^ or not at all retractile ; all 

 the scales on the body and tail smooth^ shining, equal, and 

 imbricated ; no crests of spines or gular pouch. 



SciNcus Linn., Daud. Possessing four feet ; tongue 

 short, contractile, bifid. 



Scincus Linn. The five toes of each foot margined ; 

 muzzle acute. 



S. officinalis Linn. 



Trachydosaurus Gray. Tail broad, depressed ; muzzle 

 rounded ; scales hard, bony. 



T. rugosa Gray. 



Tiliqua* Gray. INIuzzle rounded ; scales thin ; tail 

 rounded, conical ; no palatine teeth. 



T. Whiteii Gr. White's Voy. pi. 90. 



Gymnothalmus Merr. anterior feet with only four toes. 



G. quadrilineatus. 



Seps Daud. Body very long, serpen tiform ; scales as in 

 the last ; feet very small, and wide asunder ; number 

 of the toes variable. 



Lygosoma Gray. Toes five on each foot ; body very 

 long and slender ; feet small, wide apart ; the hinder 

 toes unequal, generally long ; ears distinct. 



L. capistrata. Geoff. Rep. Egypt, pi. 9. fig. 10. 



Seps Daud.j Gray. Either three or four toes upon aU 

 the feet ; the ears distinct. 



Seps Peronii. 



Chalcides Daud. General structure of Seps, but the 

 scales, instead of being imbricate, are rectangular, and 

 are disposed on the tail in transverse bands ; legs four, 



* It appears that this is the true type of the group ; if so, it would be de- 

 sirable for Mr. Gray to distinguish it by the sub-generic name of Scincus, 



