SAURIA. 



wrinkled, granular within the folds, and scaly exteriorly. Dorsal 

 and lateral scales subequal. Abdominal scales smooth, subelliptical, 

 posteriorly rounded. Tail very long, thick, and depressed at the 

 base, conical and tapering posteriorly. Greenish-brown or coppery, 

 with a yellow streak on each side of the back ; beneath bluish, uni- 

 color. 



. Proctotretus cyanogaster, DtJM. & BIER. Erp6t. gen. IV, 1837, 273. BELL, 

 Zool. Voy. Beagle, V, 1843, 12. PI. V, fig. 2. GUICH. in Gay, Hist, de Chile, Zool. 

 II, 1848, 28. Lam. n, fig. 2. DUM. Voy. Venus, Zool. 1855, 292. PI. n, fig. 2. 



Liolaemus (Liodeira) cyanogatter, FITZ. Syst. Kept. I, 1843, 74. 



Liolaemus cyanogaster, GRAY, Catal. Lizz. Brit. Mus. 1845, 212. 



OBSERV. This species, like the preceding one, is not represented in 

 the collection made by the U. S. Exploring Expedition : hence, a 

 fuller description is not deemed here in place. 



LOG. Observed upon various points in Chile. 



5. PTTCHODEIRA INTERMEDIA, Grd. 



SPEC. CHAR. Supralabials well developed, One series and a half of 

 infralabial plates. Mental shields very numerous. Auricular aper- 

 ture large, and simple in front. Temporal scales large. Abdominal 

 scales rather broad, and rounded posteriorly. Tail long and slender. 

 Dorsal region and flanks blackish-brown, with two longitudinal yel- 

 lowish-brown streaks, one along the upper portion of the flanks, from 

 the orbit to some distance along the tail, the other from the auricu- 

 lar aperture to the groin. Tipper surface of head, limbs, and tail 

 olivaceous-brown. Beneath unicolor. 



SYN. Proctotretus intermedia, BUM. Voy. Venus, Zool. 1855, 290. PI. II, fig. 1. 



OBSERV. This species resembles P. cyanogaster, to which it is closely 

 related. It differs mainly by the proportional development of its cepha- 

 lic and loral plates, and a more extended series of mental shields, which 

 may be traced almost to the throat. Its abdominal scales are likewise 

 broader posteriorly, being subrhomboid in their outlines. In the " Cata- 

 logue methodique de la Collection de Reptiles du Museum d'histoire 



