ORDER SAURIA. Ill 



The other group of monitors is distinguished by 

 angular plates upon the head, and large rectangular 

 scales under the belly and around the tail. The 

 skin of their neck clothed with small scales, makes 

 two transverse folds. They have a range of pores 

 under the thighs.* 



We may establish in them some subdivisions. 



«• 

 The first, or that of 



The Dragons, 



Has, for its distinctive character, scales raised with 

 ridges as in the crocodiles, forming crests on the tail, 

 which is compressed.t 



Holland; — an approximating species of manilla, M. Mamioratus ; — the 

 T. Elegant, and T. Etoile,Daud. III. xxxi., and Seb, I. xciv. 1,2, 3; 

 xcviii., xcix. 2 ; II. xxx. 2 ; xc, cv. 1, &c., which form but a single 

 species, originally of Africa. We must add, the T. Cepedien, Daud. Ill, 

 xxiv,, or Lac. Exanthematica, Bosc. Act. Soc. Nat. Par. pi. v. f. 3, oscillated 

 throughout ; — M. Bengalensis, Daud. ; M. Indicus, id. ; — a species uni- 

 formly blackish, from Java, M. Nigricans, C\iv. &c. 



After every comparison, I have reason to believe now that the figure of 

 Seba, I. pi. ci. f. 1, of which Linnaeus has made his Lacerta Draccena, but 

 which is very different from the Dragonne of Lacepede, is the M. JBen- 

 galensis. The original of Seba's is in our Museum. 



M. Fitzinger reserves to these species with compressed tail, the generic 

 name of Tufxnambis. 



Merrem has made of this second group his genus Teius. 



f M. Spix has made of this subdivision his genus Crocodilurus, which 

 name Mr, Gray has changed into Ada. 



