OCR Text |
Show 730 MR. G. A. BOULENGER ON ADDITIONS TO THE LIZARD [Dec. 4, O*. $• millim. millim. Total length 231 194 Head 26 22 Width of head 22 18 Body 70 69 Fore limb 42 38 Hind limb 64 55 Tail 135 103 (reproduced) This species appears to be nearest allied to S. dugesii, Bocourt. Several specimens were obtained in the State of Jalisco, at Colonia Brizuela and at L a Cumbre de los Arrastrados, 8500 feet altitude, by Dr. A. C. Buller. Among the Beptiles brought home by Dr. Buller from the Isthmus of Tehuantepec there are specimens Avhich I refer to S. melanorhinus, Bocourt. As that species is still very imperfectly known, and as the specimens I have referred to it differ in a few points from Boeourt's diagnosis, I append the following description:- SCELOPORUS MELANORHINUS, Bocourt, Journ. de Zool. v. 1876, p. 401. ...... Head large; snout much flattened. Head-shields smooth ; a series of four large transverse supraoculars, separated from the frontal and from the supraciliaries by one series of small scales, the fourth in contact with the parietal; occipital (interparietal) a httle broader than long, as broad as or broader than the parietals, which are large and broader than long; ear-opening nearly hidden under the large pointed scales in front of it. Dorsal scales much larger than ventrals, as broad as long, strongly keeled and mucronate, entire or feebly denticulate, forming parallel longitudinal series ; 26 or 27 scales betAveen the occipital scale and the base of the tail; 6 or 7 scales correspond to the length of the shielded part of the head; lateral scales keeled, directed upAvards and backwards, graduating into the dorsals and ventrals ; latter smooth, bicuspid; 36 to 40 scales round the middle of the body. The adpressed hind limb reaches the shoulder or the ear; tibia a little shorter than the shielded part of the head; the distance betAveen tbe base of the fifth toe and the extremity of the fourth equals the distance between the end of the snout or the nostril and the ear. 19 or 20 femoral pores on each side. Caudal scales nearly as large as dorsals. Male with enlarged postanal scales. Yellowish or greyish olive above; a yellowish, black-edged cross-bar between the eyes ; a yellowish band from behind the eye to above the axilla, between which a blackish blotch or bar extends across the scapular region ; some less distinct dark cross-bars may follow on the back; male with the lower surface of the head black and white in front, pale blue behind, yellowish green on the sides ; the breast and median line of belly salmon-red ; the belly pale blue near the median line, yellowish green on the sides. |