The Rfptilk Bcxik 



Plate XXXVIII 



Holbrookid propinqua and Callisaitrits dracoiwidts. From above and bt-nt-ath these small lizards appear very similar. The species of 

 Holbrookia, however, may be immediately recognised by the absence of an ear-opening 



Coll.irt-d Li/ard. l '■:.(■: :'. :< . . -t . Note iht- 



narrow collar. ;u. compared with the markings of a malt- 

 spedincD, on another plate 



iJc^cri Iguana, Dipsnsaurus dors-ilis. 1 In- n.u nt riil;irk;rd staic^ uu 

 the back represents the crest of the tropical iguan;is 



STRUCTURAL CHARACTERS OF NORTH AMERICAN' LIZARDS. Iguanidae 



