1852.] 69 
CxremtporHorus TIGRIS, B. and G.—Sceales on the subguttural fold small in size; 
four yellowish indistinet stripes along the dorsal region. From the Valley of 
the great Salt Lake. Collected by Capt. Stansbury. 
Crorariytus Wistizenit, B. and G.—Head proportionally narrow and elong- 
ated ; cephalic plates and scales on the back very small; yellowish brown, spot- 
ted all over with small patches of deeper brown or black. Caught near Santa 
Fe, by Dr. Wislizenius; specimens of the same species sent in by Lieut. Col. 
J. D. Graham, collected between San Antonio and El Paso del Norte. 
Ura (mov. gen.) B. and G.—Upper part of body covered with small scales; a 
pectoral fold of the skin; auditory apertures ; femoral pores present, whilst anal 
pores are wanting. 
Ura Sranssuriana, B, and G.—Tail slender, elongated and conical, provided 
with large scales disposed in verticils; a subgular fold in advance of the pecto- . 
ral one. From the valley of the great Salt Lake; brought home by Capt. Stans- 
bury. 
ScELoporus GRaciosus, B. and G.—Head subconical; scales of the back 
larger than in any other part of the body; tail of medium size, slender and 
conical. From the valley of the great Salt Lake. 
Enearia scincicaupa, B. and G.—This is the Tropidolepis scincicaudus of Mr. 
Skilton as published in Silliman’s Journal vii. 1849, 202. The specimen there 
described and figured is immature. From full-grown individuals we have 
drawn the following characters: Dusky green above, light ash colored below. 
Eleven transverse black bands on the back interrupted on the dorsal line, white 
dotted on their posterior margin. There are six or more of these bands on the 
tail. Thirteen to fourteen rows of scales, all of which well carinated. This 
species inhabits Oregon and California. 
PLesTriopon Sxittonranum, B. and G.—Head small, continuous with the body ; 
tail stout, very long and subquadrangular. Olivaceous brown, with one broad 
band of black on each side. Inhabit Oregon in company with the preceding. 
Collected by Rev. George Geary. 
PHRYNOSOMA PLATYRHINOS, G.—Snout truncated, flattened, concave; nostrils 
situated within the internal margia of the superciliary ridge ; occipital and tem- 
poral spines of middle size; one row of pyramido-horizontal and abdomino- 
peripheric scales, smaller than in Phr. Dowglassit. Lower surface of head 
covered with small and nearly uniform scales; on the sides and near the neck 
a series appears a little more conspicuous, slightly raised and acute. Infra~ 
marginal series of plates large, of stout appearance, sharp and acute, above 
which two rows of small plates are seen lining the margin of the lower jaw. 
Scales of the body of middle size. Femoral pores very conspicuous, but more 
apart than in Phr. Douglassii. The lower surface of the body is unicolor. 
From Great Salt Lake ; collected by Capt. Stansbury’s party. 
PHRyYNOSOoMA MopESTUM, G.—Snout truncated, flattened, but not concave. 
Nostril openings situated within the internal margin of the superciliary ridge. 
Occipital and temporal spines but little developed. No pyramido-horizontal 
scales at the periphery of the abdomen. Lower surface of head covered with 
minute, generally uniform, scales. Row of inframarginal plates resembling 
that in Phr. platyrhinos, above. which, however, one single series of smaller 
plates is observed, lining the margin of the lower jaw. Scales on the belly pro- 
portionally larger than in any other species, smooth, subquadrangular or trape- 
zoidal. Femoral pores conspicuous, the series from right and left meeting on 
the middle line of the belly and forming a curve, the convexity of which is 
turned backwards towards the vent; the lower surface of the body is unicolor. 
Brought from the valley of the Rio Grande west of San Antonio, by Gen. 
Churchill, and from between San Antonio and El Paso del Norte, by Lieut. 
Col. J. D. Graham. 
