1. zonuRUs.—2. PsEUDOCORDYLUS. 259 
Head much depressed, much longer than broad. Nasals not 
swollen, in contact, pierced in their posterior part; frontonasal 
hexagonal, as broad as long, followed by a pair of prefrontals 
forming a suture; frontal pentagonal, a little wider anteriorly ; 
interparietal small, between the four parietals, touching the fronto- 
parietals with its anterior point; temporals in three longitudinal 
rows ; no spines; four supraoculars, anterior largest; four supra- 
ciliaries; a loreal, a preorbital, three infraorbitals. Six lower 
labials, posterior largest, in contact with a row of five large shields ; 
space between the rami of lower jaw covered with scales of two 
kinds: those on the central portion quadrangular, rather large, and 
disposed in irregular rows, those on the sides small and granular ; 
scales of under surface of neck moderately large, ovate, and ir- 
regularly arranged. Scales of the back large, quadrangular, strongly 
keeled and arranged in transverse rows, generally ten in each row, 
the keels forming continuous delicate ridges; the lateral and upper 
parts of the neck, and the lower portion of sides covered with small, 
subcircular, prominent scales like small granulations. Ventrals in 
regular transverse rows, eight in each. Two enlarged posterior 
preanal scales. Upper surface of limbs covered with imbricate 
keeled scales, inferiorly with smooth scales or granules. Femoral 
pores small, closely set, eighteen on each side. ‘Tail surrounded by 
whorls of hard rugged quadrangular scales, each scale strongly 
keeled and each keel, especially towards the base of the tail, produced 
posteriorly into a sharp prominent spine, most developed superiorly 
at the lateral angles; the keels of the subcaudal scales obtuse, only 
slightly indicated, and without the spinose prolongations of the upper 
and lateral parts. Purplish brown above, dull brownish red inferiorly. 
Total length 264 millim.; tail 156 millim. 
Cape of Good Hope. 
2. PSEUDOCORDYLUS. 
Pseudocordylus, Smith, Mag. N. H. (2) ii. 1838, p. 32; Gray, Cat. 
Liz. p. 48. 
Zonurus, part., Dum. § Bibr. v. p. 344, 
Head and body depressed; limbs well developed. Head-shields 
regular; four parietals ; nostril pierced between the nasal and the 
first labial. Ear-opening large. Dorsal scales roundish, soft, inter- 
mixed with granules; ventrals large, square, smooth, juxtaposed, 
forming longitudinal and transverse series. A collar fold, attached 
medially. Digits slightly keeled inferiorly. Tailspinose. Femoral 
pores. 
South Africa. 
1. Pseudocordylus microlepidotus. 
Pseudocordylus microlepidotus, Gray, Cat. p. 49. 
Cordylus microlepidotus, Cuv. R. A. 2nd ed. i. p. 33; Guér. Icon, 
R. A., Rept. pl. vi. fir. 1; Smith, Ill. 8. Afr., Rept. pls. xxiv.-xxvi. 
and xxx. figs. 1-5. ; 
8 
