518 MB. G. A. BOtJLEIfGEE ON THE [May 18, 



interparietal shield and the base of the tail, 10-17 corresponding 

 to the length of the shielded part of the head. Lateral scales 

 much smaller, abruptly differentiated from dorsals, keeled, im- 

 bricate, directed obliquely upwards and backwards. Ventral 

 scales as large as laterals era little larger, smooth, mostly bicuspid. 

 56-78 scales round the middle of the body. 



The adpressed hind limb reaches the ear or the eye ; tibia as 

 long as or a little 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 

 a little less. 10-16 femoral pores on each side. 



Caudal scales as large as or a little larger than dorsals, strongly 

 keeled, shortly mucronate. Males with enlarged postanal scales. 



OUve, brownish, or golden above, sides darker ; a more or less 

 distinct yellowish dorso-lateral band ; a series of transverse 

 blackish bars or spots along each side of the back ; a blackish spot, 

 light-edged in front, above axilla. Lower parts yellowish or dirty 

 white in the female. Male with a large pink or pale blue blotch 

 on each side of the belly, edged internally with dark blue and often 

 very narrowly separated on the median line ; throat and breast 

 sometimes dark grey. 



Hob. The greater part of Mexico and Guatemala, extending 

 northwards into Southern Texas. 



27. SCELOPOEUS CUPEETJS. 



Sceloporus cupreus, Bocourt, Miss. Sc. Mex., B-ept. p. 210, 

 pi. xviii. bis, fig. 2 (1874). 



Sceloporus teapensis, Giinth. Biol. C.-Am., Kept. p. 75 (1890). 



Head-shields keeled or striated ; frontal transversely divided, 

 sometimes longitudinally bisected, separated from the interparietal 

 by a pair of frontoparietals ; interparietal broader than long ; 

 parietals small or broken up into scales ; a series of four or five 

 large transverse supraoculars, bordered inwards by a complete or 

 incomplete series of small scales and separated from the supra- 

 ciliaries by one or two series ; two canthal scales ; anterior border 

 of ear very feebly denticulated. 



Ten or eleven longitudinal series of large, strongly keeled, 

 shortly mucronate dorsal scales, forming straight or slightly 

 oblique longitudinal series ; 39-43 scales bet\\een the interparietal 

 shield and the base of the tail, 8 or 9 corresponding to the length 

 of the shielded part of the head. Lateral scales much smaller, 

 keeled, directed upwards and backwards, abruptly differentiated 

 from the dorsals. Ventral scales small, smooth, mostly bicuspid. 

 40-46 scales round the middle of the body. 



The adpressed hind limb reaches the ear or the eye ; 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 equals the distance between the end of the snout and 

 the anterior extremity or the middle of the collar-fold. 9-14 

 femoral pores on each side. 



