18 Ftejneger — A N'ew Lizard from Texas. 



near mouth of Pecos River, Texas, September 2, 1890; W. Lloyd, col- 

 lector, U. S. Biological Survey. 



Description. — Type: Adult male. Head-shields smooth; two canthal 

 scales, between the posterior of which three larger prefrontal shields 

 across the snout; frontal shield divided transversely; posterior frontal 

 separated from interparietal and parietals by two pentagonal fronto- 

 parietals which are broadly in contact; interparietal larger than the two 

 parietals together, trapezoid, the width anteriorly somewhat less than 

 posteriorly, the length equalling the greatestwidth: five large transverse 

 supraorbitals separated from the frontals and parietals by a single series 

 of small scales, and from the superciliaries by a double series; six supra- 

 labials, separated from the nasal and from the long subocular by a single 

 series of scales, fourthsupralabial under the center of the eye; abo\it five 

 elongate pointed scales at anterior border of ear-opening; dorsal scales 

 small, though nearly twice as large as the ventrals, rounded behind, 

 keeled, forming nearly parallel longitudinal lines; 61 scales along the 

 middle line of the back from the shielded part of the head to the base of 

 the tail; 14 scales in the middle of the back corresponding to the shielded 

 part of the head; lateral scales, including abroad area above tlie foreleg, 

 minute, granular, in strong contrast to the dorsal and ventral scales; ven- 

 tral scales smaller than dorsals, smooth, often deeply nicked; scales on 

 throat as large as ventrals, those across the lower neck even larger, more 

 pointed and with the terminal portion more free; sides of neck with strong 

 longitudinal folds joining posteriorly an oblique fold in front of the 

 shoulder, which meets the one of the other side across the lower neck; 

 about 114 scales (and lateral granules) round the middle of the body: 

 adpressed fore limb reaches the groin; adpressed hind limb reaches the 

 center of the eye; tibia a trifle shorter than distance from tip of snout 

 to ear-opening-; scales covering upper side of limbs larger than the 

 dorsals, especially those on tibia, each with strong keel ending in a 

 point; 51 femoral pores in a nearly continuous line across the preanal 

 region, only on-e scale interrupting the series on the middle line; tail 

 covered with keeled scales largej than dorsals, sharply mucronate; well- 

 developed postanal plates. 



Color (in alcohol) above, very pale clay color with ill-defined obscure 

 dusky spots on the median portion of the back, and numerous, closelj- 

 set, whitish dots which are most plainly seen above the insertion of the 

 foreleg; a vertical, narrow, bluish-black line, bordered posteriorly with 

 white, in front of the insertion of the foreleg; underside, white; the 

 throat with indistinct, pale bluish-gray lines and a somewhat ill-defined, 

 large, bluish-black, horseshoe-shaped spot on the lower neck; sides of 

 belly pale blue, with a broad crescentic inner edge of bluish-black leav- 

 ing only about four scale rows on the middle line of the belly white. 



Dimendons. — Total length, 130 mm; tip of snout to vent, 55; tip of 

 snout to ear, 13; width of head, 11; fore leg, 28; hind leg, 42. 



Variation. — The scutellation is fairly constant in the series of eight 

 specimens examined by me. The head shields show some variation in the 

 size and number of those covering the snout, but otherwise they aresur- 



