562 



REPORT OF NATIONAL MUSEUM, 1898. 



All the scales rounded, imbricate, two median dorsal and two Aentral series 



strongly enlarged transversely Iphisa Gray. 



All tlie scales rounded, imbricate, 8ube<iual Trciioscincus Cope, 



AA. No eyelids; scales cycloid, quincuncial. 



Nopncfrontals; fron to- parietals present; digits i-o . Murahlrpharus Boettfrer. 

 Praefrontals ])resent ; no fronto-parietals ; dicyitsi-iS . G ijmnophtliahniis Merrem. 



The aeconipaiiyiiis table liivestlie geograpliic distribution of the gen- 

 era of tbe Teiidie. From this tbe wide distribution of the genus Cnemi- 

 dnphorus. and the almost equally wide distribution of the genus Ameivn, 

 may be learned. The poverty of the Nearctic Realm is also appar- 

 ent, while the richness of the Brazilian and Colombian regions is 

 exhibited. The distribution of some of the genera entered in these 

 li>ts is not sufliciently well known to make their phice clear. While 

 some genera are found in both regions, there is some doubt about otliers 

 which ai)pear in both lists, and which have been found in the moun- 

 tainous regions of the Andes. It is probable that there is a special 

 zoological district in these elevated regions, but whether it is a branch 

 of the Colombian or Brazilian district, or distinct from both, is not now 

 determinable. Some of the Colombian forms range into Panama and 

 Costa Eica. 



