1852.] 175 
Specimens were obtained ort Columbia River and Puget Sound. The body of 
the largest one measures a little over four inches. 
SceLoporus Graciuis, B. and G. A pretty little species, calling to mind Sc. 
graciosus described and figured in Stansbury’s Report on the great Salt Lake of 
Utah. It is slenderer, however, and possesses more elongated limbs and tail. 
The fingers and toes are likewise very slender. The head is gently conical in 
front; the plates which cover its upper surface resemble somewhat those in Se. 
graciosus, although presenting good specific differences as will be shown by the 
figures. The scales are proportionally small and slightly carinated; larger on 
the tail. There are from twelve to fourteen distinct femoral pores right and 
left. 
Above, the color is brown with a lateral and narrow yellowish stripe extend- 
ing on either side from the eye to the tail, and margined by a series of elongated 
black dashes. On the sides of the body there is a double series of black cres- 
cents, convex backwards. The inferior part of the body is light and unicolor in 
the female, whilst the male is provided on the sides of the abdomen with a deep 
blue elongated area. 
Inhabits Oregon. 
SceLororus occrpENTALIs, B. and G. This species has the general appearance 
and shape of Sc. wxdulatus, from which we distinguish it by marked differences 
in the cephalic plates. The dorsal scales are more strongly carinated and their 
posterior point more acute, thus giving to the animal a rougher aspect. The 
posterior margin of the scales on the lower surface of the head and sides is on 
the other hand much less indentated, especially in advance of the hind legs. 
Inhabits California, and probably Oregon, although less numerous in the 
latter country where it is replaced by Sc. gracilis and the following species. 
SceLororvs FronTauis, B. and G. The moststriking character of this species 
consists in the rounded shape of the snout, a feature attracting immediate notice. 
The occipital, vertical and frontal plates resemble more those in Se. wndulatus, 
than in Se. occidentalis, but the arrangement of the supraciliaries is more like 
that in Sc. occidentalis than in Sc. undulatus. The scales are slightly earinated ; 
hence a general smooth appearance which contrasts somewhat strikingly with 
that of Sc. occidentalis. The dorsal scales are nearly of the same size as in Sce 
occidentalis, but at the origin of the tail are sensibly larger. The tail of the 
unique specimen before us, is broken off at about an inch from the vent. 
Caught in going up Puget Sound. 
Exearia principis, B. and G. Twelve longitudinal rows of smooth abdominal] 
scales, trapezoidal on the belly. Fourteen similar rows of carinated scales on 
the upper part of the body, forming forty-five transversal series from immedi- 
ately behind the meatus to the origin of the tail. On the tail itself the scales are 
the largest, smooth underneath and slightly carinated above. The body and 
limbs are of slender appearance. The species appears not to attain a very large 
size; the Jargest individual seen measures about nine inches from the nose to 
the tip of the tail. ) 
Of the cephalic plates the vertical one is the most prominent; the shape of 
the frontal plates readily distinguishes this species from E. scincicauda. 
Color uniform olivaceous brown above and below; three series (either double 
or single) of black spots all along the upper region from the head to the tail. 
From Oregon and Puget Sound. 
Exve@aria Formosa, B. and G. Sixteen longitudinal rows of strongly carinated 
scales on the upper part of the body, forming about fifty transversal series from 
the meatus to the origin of the tail. Abdominal scales twelve rowed. Tail 
very long, conical, and tapering. Color yellowish green, with numerous irregu- 
lar, narrow, transverse bands of brownish black tipped posteriorly with white. 
This species resembles Gerrhonotus multicarinatus of Blainville, (Elearia 
multicarinata) in the slender appearance of its body and limbs; the latter how- 
