226 ZOOLOGY. 



of that organ to the last fifth of its length. They are smooth upon the anterior fifth, hence 

 to the tip conspicuon.sly carinated, particularly upon the middle region ; at the hase of the tail 

 the scales are but .slightly larger than on the posterior portion of the body ; they are smooth 

 everywhere else except, as mentioned, upon the tail. The carination is gradually appearing 

 under the shape of a blunt and small protuberance which may be seen upon the posterior ex- 

 tremity of the scales. Every other or every third row subdivides as it ascends from the sides 

 of the tail towards its upper surface, from the base to about the third of the length, the sub- 

 division gradually diminishing in extent until reduced to a few scales upon the middle of the 

 upper region ; hence backwards they constitute regular annular rows. The ground-color is 

 olivaceous, varying in shade. From the occipital region to tlie base of the tail there are four 

 longitudinal series of .ratlier large black patches. The latter are subcircular or subquadrangu- 

 lar, transversally elongated, and provided laterally with a white line or spots, exteriorly again 

 margined with a black filet; sometimes the black and central part of the blotch is wanting, in 

 which case we have two independent white subrounded spots, margined with black. The 

 occipital region is maculated with black. The inferior region of the flanks is vermiculated or 

 spotted with brownish black, upon a whitish ground. The upper surface of the anterior limbs 

 exhibits confluent lines or spots — some brownish, others whitisli ; the posterior limbs are macu- 

 lated or else vermiculated with blackish. The upper surface of the tail presents intermingled 

 black, brown, and olivaceous spots of various shades. The inferior regions are white ; the 

 throat, the belly, the thighs, and base of the tail are spotted with blackish brown. 



Collected in the neighborhood of Santiago, Chile. 



It is worthy of remark that Aineiva oculata, mentioned by d'Orbigny in his Travels to South 

 America, was erroneously introduced in that work. The specimen from whicli his figure is 

 made, is one of those collected by Claude Gay, in Chile, supposed for a time by the naturalists 

 of the Garden of Plants in Paris to have been brought home by Alcide d'Orbigny, whose collec- 

 tions were deposited in that establishment, where Claude Gay had likewise sent his. 



The shajies of the dorsal black spots, as described above, agree in the two specimens brought 

 home by Lieut. Gilliss. They are at variance with those described and figured by Claude Gay. 



Plate XXXIX, fig. 1, represents Aporomera ornala, in profile and ei.ze of life, 

 fig. 2, is an under view of the same specimen, 

 fig. 3, the head seen from above, 

 fig. 4, a side view of the head. 



Genus CNEMIDOPHORUS, Wagl. 



Gen. ciiak. Base of tongue not sheathed, moderately long, divided upon its anterior ex- 

 tremity into two smooth filets, covered with scaly, rhomboid, and subimbricated papillaa. Palate 

 toothed. Intermaxillary teeth conical and simple ; maxillary teeth compressed ; the anterior 

 simple ; the posterior tricuspid. External opening of nostrils situated either exclusively in a 

 single naso-rostral plate, or between several nasals. Eyelids present. Tympanic membrane dis- 

 tinct, stretched inside the rim of the auditive aperture ; a double transversal fold under the neck. 

 Ventral scutellje quadrilateral, flat, smooth, not, or little imbricated, disposed in alternate rows. 

 Large scutellaj-like plates under the legs. Femoral pores present. Five fiagers a little com- 

 pressed, not carinated beneath. Five toes similar in structure to the fingers. Tail cyclo- 

 tetragonal. 



Syn. Cnemi(loi)liorus, Waol. Nat. Syst. Amph. 1830, 154. 

 DuM. & BiBR. Erp. Gen. V, 1839, 123-. 



