T E I u s. 201 



Plate XXIY, fig. 1, represents Lacerta maderensis, size of life. 



Fig. 2, is a view of the upper surface of the head ; 



Fig. 3, a profile of the same ; and, 



Fig. 4, a view from beneath. 



Fig. 5, exhibits the left hand from above ; 



Fig. 6, the same hand from beneath. 



Fig. 7, is a group of dorsal scales. 



Fig. 8, is intended to show the abdominal scutellae. 



Figs. 2-8 are somewhat magnified. 



SuBEAM. PLEODONTES. 



The teeth are compact throughout, and firmly adhering to the jaw 

 bones. All the representatives of this group belong to the New, or 

 Western World. 



SY^—PlSodontes, DuM. & BiBR. Erpet. gen. V, 1839, 16 & 40. 



Teidae, Gray, Ann. Nat. Hist. I, 1838, 276 ; &, Catal. Lizz. Brit. Mus. 1845, 14. 



Observ.— The " Autosaures pl^odontes," subdivided into " Compres- 

 sicaudes," which have a compressed tail, crested above; and "Strongy- 

 lures," whose tail is rounded, conical, or better cyclotetragonal. The 

 species recorded below belongs to the latter subdivision. 



Genus TEIUS, Merr. 



Gen. Char. — Tongue long and protractile, sheathing at the base, 

 covered with rhomboid papillae, subdivided upon its extremity into 

 two slender, smooth threads. No palatine teeth. Premaxillary teeth 

 slightly flattened, exhibiting two or three notches at their summit. 

 Anterior maxillary teeth hooked ; the rest being erect, compressed, 

 tricuspid in the young, and tuberculous in the old. Nostrils lateral, 

 situated between two plates, and approximating closely the first lar 

 bial. Eyelids extant. Tympanum near the external edge of the 

 auricular aperture. Two or three cross-folds under the neck. Back 

 covered with small, angular, not imbricated, scales, disposed upon 

 transverse series. Abdominal scutellae flat, smooth, quadrilateral, 



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