Mr. A. W. E. OVShaughncssy on Norops. 1 87 



the latter by Dume'ril and Bibron: — "Corps cl'un brim fauve 

 dore", avec ou sans bande d'une teinte pins claire snr le dos." 



Cope (I. c. 1861, p. 212) enumerates. the 12-striatus of Ber- 

 thold (affixing his own name to the species with no apparent 

 reason), and says that it is identical with Hallo well's macro- 

 dacfylus. 



Thus the true Norops auratus is the auratus described by 

 Dume'ril and Bibron ; and this has been recognized by Ber- 

 thold, the first authority for the other species, and by every 

 writer since who has discriminated between the two species, 

 with one exception. 



Dr. Peters, in the l Berichte der Verhandlungen der Akad. 

 Berlin,' 1863, p. 135, described an Anolis tropidonotus as 

 a new species " nearly allied to the A. auratus of Daudin." 

 He then gives, as synonyms of the latter species, the Draconura 

 12-striata of Berthold and the Norops macrodactylus of Ilal- 

 lowell. 



The species of Berthold and Hallowell is not the auratus of 

 Daudin, since those writers have characterized it as a slender 

 species, with a tail nearly thrice the length of the body, toes 

 not dilated, the scales of the muzzle only keeled, the rest of the 

 head-shields smooth, occipital plate distinct, only one series of 

 scales between the eye and upper labials, and Dume'ril and 

 Bibron have characterized the auratus of Daudin as having 

 the tail only twice the length of the body, the occipital plate 

 very small and indistinct, two series of scales between eye 

 and upper labials, and all the head-shields strongly keeled. 



On the other hand, the species Anolis tropidonotus of Dr. 

 Peters is nothing more than the true auratus. 



The principal characters which he enumerates are as fol- 

 lows : — 



1. Two longitudinal rows of larger keeled scales between 

 the supralabials and the eye. 



2. The occipital shield is much smaller, and the surround- 

 ing shields larger, than in A. auratus (12-striatus). 



3. The ear-opening is larger. 



7. The expansion of the toes is much more developed. 



8. The tail is shorter. 



9. The white lateral stripe, so characteristic of A. auratus 

 (12-striatus), is absent. 



10. In adult males the gular pouch hangs down very 

 much. 



Dr. Peters then describes the colours, which are, in fact, ex- 

 actly those of the true auratus. 



He further gives also the important character of the greater 

 length of the limbs. The fore and hind limbs, he says, reach, 

 when laid forward, even beyond the head, while in the other 



