256 ZONURIDE. 
pores on each side. Tail with whorls of large, strongly keeled, 
spinose scales, the spines very large on the upper and lateral sur- 
faces. Yellowish brown, belly clouded with dark brown; gular 
region dark brown, spotted with ight yellow. 
nillim. millim. 
Total length ...... 203 Fore limb........ 37 
GAd eck Qik 29 Hind limb........ 45 
Width of head .... 28 MD AAIe coh ais Aware 100 
Body aan saa Aiea 74 
South Africa. 
a-b. 3 & her. Western coast of Cape Colony. Sir A. Smith [P.]. 
4. Zonurus cordylus. 
Zouurus cordylus, Gray, Cat. p. 47. 
cataphractus (non Boie), Gray, l. ¢. 
Lacerta cordylus, Linn. S. N. i, p. 861. 
Cordylus verus, Laur. Syn. Rept. p. 52. 
Stellio cordylus, Daud, Rept. iv. p. 8. 
Zonurus cordylus, Merr. Tent. p. 57. 
Cordylus griseus, Cuv. R. A. 2nd ed. ii. p. 33; Smith, Mag. N. GT. 
(2) ii. p. 31, and Ill. S. Afr., Rept. pl. xxviii. figs. 2,3, & xxx. 
fig. 8. 
- niger, Cav. le. 
dorsalis, Cav. 1. ¢. 
Zonurus vertebralis, Gray, Ann. N. H, i. 1838, p. 388. 
griseus, Dum. § Bibr. v. p. 350. 
Head much depressed, much longer than broad. Head-shields 
slightly rugose; nasals not swollen, in contact, pierced in their 
posterior part; frontonasal hexagonal, broader than long, followed 
by a pair of preefrontals forming a suture; frontal pentagonal, a 
little wider anteriorly ; interparietal small, quadrapgular, in the 
middle between the two pairs of parietals, of which the posterior is 
the largest ; temporals slightly keeled, in four longitudinal rows ; 
no spines; four supraoculars; three supraciliaries ; lower eyelid 
opaque; a small loreal; a large preorbital; three infraorbitals ; 
five or :ix upper labials, posterior largest; rostral three to four 
times as broad as high. Mental rather large, tetragonal or penta- 
gonal ; five or six lower labials, posterior largest and keeled, bordered 
by a row of five large shields, the fourth of which is the largest ; 
gular scales moderate, subquadrangular, imbricate, larger and more 
rounded on the neck; sides of neck with spinose keeled scales. 
Dorsal scales large, forming regular transverse series, imbricate, 
subquadrangular, more or less strongly keeled, shortly mucronate, 
frequently serrated; on the flanks similar, but more strongly 
keeled ; a distinct lateral fold; twenty-five to twenty-eight cross 
series of scales from occiput to base of tail, the largest: containing 
sixteen or eighteen scales. Ventral scales smooth, quadrangular, a 
little broader than long, slightly imbricate, forming ten to fourteen 
