1852.] 175 



Specimens were obtained on Columbia River and Puget Sound. The body of 

 the largest one measures a little over four inches. 



ScELOPORUs GRACILIS, B. and G. A pretty little species, calling to mind Sc. 

 graciosus described and figured in Stausbury's Report on the great Salt Lake of 

 Utab. 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 Sc. 

 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. 



ScELOPORUS occiDENTALis, B. and G. This species has the general appearance 

 and shape of -S'c. undulatus, 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 indented, 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. 



ScBLOPORUS FRONTALIS, B. and G. The most striking 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 Sc. undulatus, 

 than in Sc. occidentaHs, but the arrangement of the supraciliaries is more like 

 that in Sc. occideiitalis than in Sc. undulatus. The scales are slightly carinated ; 

 heuce a general smooth appearance which contrasts somewhat strikingly with 

 that 0^ Sc. occidentalis. The dorsal scales are nearly of the same size as in Sc. 

 occidentalism 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. 



Elgaria prin'cipis, 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 largest 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. 



Edgaria 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 Gerrhonotu^ muliicarinatus of Blainville, {Elgaria 

 multicarinata) in the slender appearance of its body and limbs; the latter how- 



