LIZARDS. 47 



The CoRDYLE. Cordylus polyzonus, A. Smith, Mag. N. H. 

 ii. 34. Illust. Zool. S. Africa, Rept. t.28,f. 1. t 30,/. 7. Dum. 

 et Bib. E. G. v. 357. 



Grey, black-varied, with a black streak behind the ears; scales 

 of the back ovate, rhombic, slightly keeled, in 40 cross. rows ; of 

 the sides rather more keeled; tail and sides of the neck rather spi- 

 nose ; ventral shields 18-rowed. 



a. Young, in spirits. Olive, black-spotted ; tail with alternate 

 pale rings. S. Africa. Presented by the Earl of Derby. 



2. ZONURUS. 



Head depressed, fronto-parietal and parietal plates large, form- 

 ing a square ; interparietal square. Neck spinose. Temple-shields 

 keeled. Nasal triangular, contiguous, supranasal none. Eyelids 

 distinct, lower opaque, scaly, with a central longitudinal series of 

 larger 6-sided scales. Scales of the back and sides square, keeled, 

 in close cross series. Toes 5-5, compressed, keeled beneath. Tail 

 round, spinose. 



* Ventral shields square, truncated behind. 



The Rough-scaled Cordyle. Zonurus Cordylus, Merrem, 

 Tent. 57. Gray, Ann. N. H. i. 388. Lacerta Cordylus, Linii. S. 

 N. 361. Daud. Rept. iii. 8. Cordylus verus, Laur. Syn. 52. C. 

 griseus, Cuv. R. A. ii. 33. Seba,\\.t.62,f. 5. Dum. et Bib. E. G. 

 v.'350. A. Smith, 111. Zool. S. Afr. i. 28,/. 2, 3. t. 30,/. 8. Stel- 

 lio niger, Daud. Rept. iii. 48. Cuv. R. A. 33. C. dorsalis, Cuv. 

 R. A. ii. 33. Seba, t. 109,/ 5. Le Cordyle, Lacej). Q. O. i. 324. 

 Pet. Gaz. t. 58,/. 12. 



Head-shields smooth. Scales of the back large, rhoraboidal, 

 keeled, in 19 cross rows, central series broadest, the rest keeled ; of 

 the sides with the keels prolonged into spines ; of the tail sharply 

 keeled the whole length ; nasal plate not swollen ; side of the neck 

 spinose; ventral shields 10 or 12-rowed; lateral series very nar- 

 row ; tail slender, angular. 



a. Adult, in spirits. S. Africa. From the Leyden Museum. 



b. Adult, in spirits. Larger. S. Africa. 



The Shielded Zonurus. Zonurus cataphractus. Gray, Grif- 

 fith, A. K. ix. 63. Ann. N. H. i. 388. Dum. et Bib. E. G. v. 355. 

 Cordylus cataphractus, Boie, N. Act. N. Cur. xiv. 139. Z. Cor- 

 dylus, Schlegel, Zon. i. 7,/. 2. C. maculosus, A. Smith, Mag. N. 

 H. ii. 31. 



Head-shields rugose ; scales of the back 4 -sided, oblong, keel- 

 ed, in 16 cross rows, of the sides equally large and spinose ; of the 

 tail broad, thick, keeled, rugose, and ending in a conical point ; 

 nasal plate swollen ; tail and sides of neck strongly spinose ; ven- 

 tral shields 12 or 14-rowed, lateral series moderate ; tail thick, 

 roundish. 



