OCR Text |
Show 1897.] LIZARDS OF THE GENUS SCELOPORUS. 513 sides of belly pale blue, wdth seven to nine blackish-blue crossbars. The coloration of the female is still unknown. Hab. This well-marked species is only known from one locality : Coliraa, in "Western Mexico. 23. SCELOPORUS CHRTSOSTICTUS. Sceloporus chrysostictus, Cope, Proc. A c Philad. 1866, p. 125, and Proc. A m . Philos. Soc. xxii. 1885, p. 394; Bouleng. Cat. Liz. ii. p. 235 (1885); Gunth. Biol. C.-Am., Eept. p. 70 (1890). Head-shields keeled or striated; frontal transversely divided, the anterior portion usually longitudinally bisected ; a pair of interparietals between the frontal and the interparietal; latter broader than long ; parietals very small, one or two on each side; a series of four or five large transverse supraoculars, bordered inwards by a complete or incomplete series of very small scales, and separated from the supraciliaries by one or two series of scales; two canthal scales, rarely one; anterior border of ear feebly denticulated. Dorsal scales much larger than ventrals, strongly keeled, simply pointed, forming slightly oblique longitudinal lines ; 40-45 scales between the interparietal shield and the base of the tail, 8-10 corresponding to the length of the shielded part of the head. Lateral scales smaller than, but graduating into, the dorsals, keeled and directed obliquely upwards aud backwards. Ventral scales small, smooth, entire. 36-40 scales round the middle of the body. The adpressed hind limb reaches the anterior border of the orbit or the nostril; tibia longer than the shielded part of the head; the distance between the base of the fifth toe and the extremity of the fourth equals the distance between the arm and the nostril or the tip of the snout. 13-16 femoral pores on each side. Caudal scales as large as dorsals, keeled, pointed. Males with enlarged postanal scales. A. „ 0. 0 1. 63 52 55 50 2. 13 11 11 11 3. 14 12 12 11 4. 16 13 14 14 5. 21 20 20 19 6. 41 44 43 43 7. 9 10 10 9 8. 36 38 40 38 9. 15-14 15-16 15-15 14-? Brownish or olive above, strongly metallic; a golden dorsolateral band; a blackish spot at axilla ; hinder side of thighs with a transverse and several vertical blackish bars. Lower surfaces yellowish white, throat sometimes brownish. Male without distinctive ventral markings. Hab. S. chrysostictus is recorded by Cope from Yucatan and Guatemala. |