| OCR Text |
Show 1897.] LIZARDS OF THE GENUS SCELOPORUS. 479 Dorsal scales much larger than ventrals, as broad as long or a little broader than long, moderately or strongly keeled, with more or less distinctly denticulated posterior border, simply pointed or more or less strongly mucronate; the keels of the dorsal scales forming parallel longitudinal series ; 27 to 37 scales between the interparietal shield and the base of the tail; 5 to 7 scales, taken in the middle of the back, correspond to the length of the shielded part of the head. Lateral scales keeled, directed obliquely upwards and backwards, as large as or a little smaller than the dorsals. Ventral scales small, smooth, entire or bi- or tricuspid. 34 to 44 scales round the middle of the body. The adpressed hind limb reaches the shoulder, the cervical fold, or the ear; tibia as long or nearly as long as the shielded part of the head; the distance between the base of the fifth toe and the extremity of the fourth equals or slightly exceeds the distance between the end of the snout and the ear. 9 to 20 femoral pores on each side. Caudal scales about as large as dorsals, strongly mucronate. Males with enlarged postanal scales. The following table shows the variations in the proportions and in the scaling in the specimens examined:- A. A series of four or five transversely enlarged supraoculars (fig. 1, a). <S El Paso, Texas. Forrer .... Guadalajara, Jalisco. Buller Guanajuato. Duges »» »> Plateau of Mexico. Geddes . Hacienda del Bobo. Hoege . R. Santiago, Jalisco. Smith. )> i> >> !> )' J) S. Mexico. Godman Mexico. Boucard ,, De Moore 9 1. 113 61 106 97 71 89 118 103 100 84 79 70 98 130 22 14 20 18 15 19 22 20 20 17 16 15 19 24 3. 25 15 22 20 16 21 25 24 23 20 19 16 21 28 23 13 21 18 15 18 22 21 20 17 16 15 19 24 26 16 23 20 18 22 24 24 22 20 20 17 21 27 6. 27 28 29 28 28 31 28 27 28 29 27 28 30 27 5 6 5 5 6 6 5* 54 7 6 7 5 5 8. 36 39 38 38 40 42 36 40 36 40 38 40 40 36 9. 18-17 17-17 16-18 19-17 15-16 20-20 17-18 20-19 15-14 16-18 16-16 19-19 16-18 18-18 B. Supraoculars intermediate between A and C (fig. 1, b, c). 2. Mexico 1. 113 75 2. 22 15 3. 26 18 4. 22 15 5. 24 19 6. 28 30 7. 6 6 8. 38 42 9. 10-10 17-17 32* |
