238 IGUANID.E. 
23. Sceloporus fulvus *. 
Sceloporus fulvus, Bocourt, Miss. Sc. Mex., Rept. p. 214, pl. xviii. 
bis, fig. 8. 
Head-shields keeled or striated; one canthal scale; a series of 
four or five large transverse supraoculars ; occipital as long as broad ; 
parietals much smaller, two on each side; anterior border of ear 
very slightly denticulated. Lateral cervical fold forming a deep 
pouch. Dorsal scales much larger than ventrals, strongly keeled, 
sharply pointed, forming eight parallel longitudinal series; thirty 
to thirty-two scales between the occipital and the base of the tail ; 
seven or eight scales correspond to the length of the shielded part 
of the head; lateral scales smaller, slightly larger than ventrals, 
keeled, directed obliquely upwards ; ventrals obtusely keeled, pointed, 
not emarginate ; thirty-eight to forty scales round the middle of the 
body. ‘The adpressed hind limb reaches the eye; 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 end of the snout and the cervical pouch. Three or four 
(or five) femoral pores. Tail long; caudal scales nearly as large as 
dorsals. No enlarged postanal scales. Fulvous above, sides dark 
brown ; a yellow dorso-lateral band separating the dorsal from the 
lateral surfaces ; a more or less distinct series of oblique dark-brown 
spots along each side of the back ; lower surfaces uniform yellowish 
in both sexes. 
millim. millim. 
Total length ...... 149 Fore limb ........ 21 
Heads sian a siscsae' 4. ee 12 Hind imb........ 35 
Width of head .... 9 Haul os araecbiies B43 106 
Body ois osit neste se-g 31 
Salvador, Nicaragua. 
24. Sceloporus squamosus. 
Sceloporus squamosus, Bocourt, Miss. Sc. Mex., Rept. p. 212, pls. xviii. 
bis. fig. 7, and xix. fig. 83; Cope, Proc. Am. Philos. Soc. xxii. 1885, 
p. 094. 
Differs from S. siniferus and fulvus by the presence, in the male, 
of enlarged postanal scales ; from the former, by the presence of a 
single canthal scale ; from the latter by the absence of a keel on the 
ventral scales. Lower surfaces, in both sexes, yellowish, dotted all 
over with grey. 
Guatemala to Costa Rica. 
25. Sceloporus utiformis. 
Sceloporus utiformis, Cope, Proc. Ac. Philad. 1864, p. 177 ; Bocourt, 
Miss. Sc. Mex., Rept. p. 208, pl. xviii. bis. fig. 6; Cope, Proc. Am. 
Philos, Soc. xxii. 1885, p. 89-4. 
* Described from specimens from Nicaragua, in M. Lataste's collection. 
