258 ZONUKID^. 



posterior keeled, in coutact with a row of five large shields ; gular 

 scales flat, subquadangular or polygonal, slightly imbricate, the 

 anterior smallest, the others nearly as large as the ventrals ; scales 

 under the neck rounded, strongly imbricate ; sides of the neck with 

 short erect spinose scales. Dorsal scales relatively small, quadran- 

 giilar, striated or more or less distinctly keeled, forming regular 

 transverse series, which sometimes alternate on the median line; 

 lateral scales same as dorsals, but strongly keeled and serrate ; a 

 distinct lateral fold; thirty-two to forty-four transverse series of 

 scales fi'om occiput to base of tail, the largest containing thirty-two 

 to thirty-eight scales. Ventrals quadrangular, scarcely imbricate, 

 smooth, forming twenty or twenty-two longitudinal and thirty-four 

 to thirty-six transverse scries. Prseanal scales very irregular. Limbs 

 with keeled imbricate scales, except under the thighs, where they are 

 smooth. Femoral pores ten to sixteen on each side. Tail with 

 whorls of keeled spinose scales, strongest on the sides. Brovrn or 

 yellowish-brown above, with more or less distinct darker spots ; a 

 blackish spot on each side of the neck ; lower surfaces yellowish or 

 reddish. 



millim. miUim. 



Total length 251 Fore limb 39 



Head 26 Hind limb 56 



Width of head 22 Tail 145 



Body 80 



South Africa. 



a-d. d", $, & hgr. S. Africa. Sir A. Smith [P.]. (Types.) 



e, f. ^ . S. Africa. 



£r."yg. S.Africa. Earl of Derby [P.]. 



h-i. S • Orauge River. D. Kamiemeyer, Esq. [P.]. 



h. Skeleton. S. Africa. Sir A. Smith [P.]. 



6. Zonurus pustulatus. 

 Zonurus pustulatus, Peters, Mon. Bed. Ac. 1862, p. 19. 



In general structure similar to the preceding, but distinguished by 

 the much smaller anterior median gulars, which are almost granular, 

 by the very large femoral pores (in the male), which are in two or 

 three series, and by the scales of the lower surface of the thighs, 

 which increase in size posteriorly. Two large prseanal scales, as in 

 Z. cordylus. Dorsal scales in thirty-one or thirty-two cross rows, 

 from occiput to base of tail. Olive-brown, darker spotted, and 

 with scattered yellow spots ; lower surfaces brownish yeUow. 



Total length 195 millim. ; tail 113 millim. 



Hereroland, S.W. Africa. 



7. Zonurus capensis. 



Hemicordylus capensis, Gray, Cat., p. 48. 

 Cordylus (Hemicordylus) capensis, Smith, Mag. N. H. (2) ii. p. 32, 



and III. S. Afr., Rept. pi. xxvii. fig. 2, pi. xxx. fig. 6. 

 Zonurus capensis, Dxim. ^- Bibr. v. p. 360. 



