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Show 512 MR. G. A. BOULENGER ON THE [May 18, lines, the first of which crosses the frontal and supraocular regions. Male with a black bar (sometimes interrupted) across the throat, and with a large pale blue blotch on each side of the belly, broadly edged with blackish blue on the median ventral line. Hah. The specimens were collected at various localities in the State of Jalisco, at altitudes varying between 7800 and 8500 feet. 22. SCELOPORUS PYRRHOCEPHALUS. Sceloporus pyrrhocephalus1, Cope, Proc. A c Philad. 1864, p. 177, and Proc. A m . Philos. Soc xxii. 1885, p. 394; Bouleng. Cat. Liz. ii. p. 235 (1885) ; Giinth. Biol. C.-Am., Eept. p. 70 (1890). Head-shields smooth ; frontal transversely divided, in contact with the interparietal, which is a little broader than long ; parietals small, one pair on each side; one or two canthal scales ; five large transverse supraoculars, bordered inwards by one series of scales, and separated from the supraciliaries by another ; five scales, not larger than those before them, form a denticulation on the anterior border of the ear. Dorsal scales much larger than ventrals, strongly keeled, mucronate and more or less distinctly denticulate, forming oblique series converging towards the median line; 40-43 scales between the interparietal shield and the base of the tail; 8 scales, taken in the middle of the back, correspond to the length of the head. Ventral scales small, smooth, bicuspid. 46-50 scales round the middle of the body. The adpressed hind limb reaches the shoulder or the ear; tibia as long as the distance between, the end of the snout and the ear; the distance between the base of the fifth toe and the extremity of the fourth exceeds the distance between tbe end of the snout and the posterior border of the ear. 12-15 femoral pores on each side. Tail distinctly compressed. Caudal scales as large as dorsals, strongly keeled and mucronate. Males without enlarged postanal scales. The two specimens in the British Museum show the following measurements and numbers of scales :- o". Colima. d- .. 1. 72 66 2. 15 13 3. 16 14 4. 16 15 5. 18 19 6. 43 40 7. 8 8 8. 50 46 9. 12-12 14-15 Bronze-coloured above, reddish towards the sides; a broad, black, light-edged stripe along each side; a black vertical bar in front of the shoulder ; head reddish brown ; lips with dark vertical bars; an elongate black spot with yellow centre (pineal eye) in the middle of the interparietal shield; throat with oblique bluish bands, converging posteriorly ; breast and middle of belly yellowish; 1 Originally misspelt "pyocephalus." |