LIODEIRA. 339 



Fig. 18, is an upper view of the head ; 

 Fig. 19, a profile ; and, 



Fig. 20, a view from beneath of the same region. 

 Fig. 21, the left hand, from above ; 

 Fig. 22, the same, from beneath. 

 Fig. 23, exhibits a group of dorsal scales; 

 Fig. 24, a group of abdominal scales. 



Fig. 25, represents the young of the same species, originally de- 

 scribed by Wiegmann as Tropidurus nitidus. 



Subgenus LIODEIRA (Dum. k Bibr.), Fitz. 



Gen". Char. — Cephalic plates moderate, not imbricated, smooth ; one 

 series of supralabials. Nostrils lateral. Temporal scales carinated, 

 imbricated. Auricular aperture denticulated in front. Sides of 

 neck not folded ; a vertico-oblique fold in advance of the shoulder ; 

 covered with scales similar to those of the back. Dorsal and lateral 

 scales large, rhomboid, conspicuously carinated, and acuminated. 

 Abdominal scales posteriorly rounded, entire, or bifid. Posterior 

 aspect of thighs minutely scaly or granular. Colors : longitudinal 

 or transverse series of dark spots, upon a lighter ground. 



Syn. — Leiodhres, DuM. & Bibr. Erpet. gen. IV, 1837, 269. — Dum. & A. Dum. 

 Catal. Kept. Mus. d'hist. nat. i, 1851, 71. 



Liodeira, FiTZ. Syst. Kept. I, 1843, 17 & 74. 

 Leiodera, GraY; Catal. Lizz. Brit. Mus. 1845, 210. 



Observ. — Differs from Liolaemas, which it most resembles, by a 

 vertico-oblique fold in advance of the shoulder, simulating a diminu- 

 tive pouch. 



In the absence of specimens and accurate information regarding 

 Leiodera gravenJiorsti, Gray (Catal. Lizz. Brit. Mus. 1845, 211), we are 

 unable to furnish a diagnosis of the specific characters of that species, 

 which is a native of Chile, and considered by Thos. Bell as a mere 

 variety of L. chilensis. 



Liolaemiis inconspicuiis, Gray (Brit. Mus. 183G; &, Catal. Lizz. Brit. 

 Mus. 1845, 213), appears to us more closely related to the species of 

 Liodeira than those of Liolaemus, though the scanty information we 

 possess will not allow us deciding that question. 



