OCR Text |
Show 862 AFPEKDIX C.- RBPTILK&. belly proportionally larger than in any other species, smooth, quadrangular, and trapezoidal. Femoral pores conspicuous; the series from right and left coming Into contact on the middle line of the belly, and forming a curve, the convexity of which is < turaed backward toward the vent. The lower surface of the body'is nni-color. . PHRTOOSOMA DOUGLASSII, Gray. PL.. VII. Fro. B- fc 8yn. PHBYVOSOXA POUGLABSII, Gray, Synops. Kept in Griff. Anim. Kingd. IX. 1831, 44.- WAOL. Nat Syst Amp*. 1830, 146.- Wisov. Hefp. Mez. 1884, 64.- HOLBE, N. Amer. Harp. L 1842, 101, to. XIV.- GRAY, Cat. Brit Mda. . 1846,227. Agama douglauU, BELL, TraM. Linn. 8oo. L. XVI. ( 1828), 1 8 s 8 r 106, PL X.- HA& LI Med. and Phys. Research. 1836, 141, fig. 8. The specimen figured is not the largest of the species, but being the only one secured at Salt Lake, we took it in preference to any of those which we have from California and Oregon. It is about three inches and a- balf long; the head is a little less than a fifth of the entire length. The body, from the neck to the origin of the hind legs, is about of the same length as the remaining posterior portion. The body is suborbicular, being nearly as broad as long. Thtose dimensions may vary to some degree among different individuals, but, generally speaking, they give to the species its specific character as far as the form an d> outlines of thto body are concerned. Viewed from above ( fig. 6), the body is sufitriangular, as broad behind as longv, acuminated, but rounded in front. The vertex is cordiform, a little depressed in the middle, forming over the eyes a prominent carina, composed of four or five elongated plates, and posteriorly terminated by a blunt spine or acute knob. > The occipital region, immediately behind, is depressed, and provided with three acute knobfc, the central one inconspicuous. The temporal region is bordered posteriorly by three or four spines or eubpyramidal plates. The auditory aperture is vertically oblong or semilnnated. The nostrils are proportionally very large, and situated at the anterior prolongation of thV^ uperciliary ridge. The polygonal plates are very minute on the nasal region and all along the upper jaw; the marginal row, however, being a little more conspicuous.. The profile ( fig. 7) exhibits the characters just alluded to, and gives a perfect picture of the physiognomy of this species. The eyes are oval. The feame figure 7 exhibits the double jow of large scales of the lower jaw. |