20. HOPLURUS. 129 
20. HOPLURUS*. 
Oplurus, Cuv. R. A. Qnd ed. ii. p. 47; Dum. § Bibr. iv. p. 859; 
Gray, Cat. Lis, p. 221, 
a part., Wagler, Syst. Amph. p. 146; Wiegm. Herp. Mex. 
8 
Hoplurus, Fitzing. Syst. Rept. p. 76. 
Doryphorus (non Cuv.), Fitzing. lc. p. 77. 
Tropidurus (non Wied), Gray, l.c, p. 225. 
Centrura, part., A. Dum. Arch. Mus. viii. p. 556. 
Tympanum distinct. Body depressed; no dorsal crest. Dorsal 
scales uniform, imbricate or juxtaposed. Upper head-scales slightly 
enlarged; occipital more or less enlarged. A strong transverse 
gular fold; no gular sac. Digits compressed, with keeled lamellz 
inferiorly. No femoral or preanal pores. Tail moderately long, 
subcylindrical, with whorls of spinose scales. Lateral teeth tri- 
cuspid; pterygoid teeth. No sternal fontanelle, Abdominal ribs. 
Madagascar. 
Synopsis of the Species. 
Dorsal scales larger than ventrals, im- 
bricate, strongly keeled; the whorls 
of large spinose caudal scales separated 
from each other by a whorl of smaller 
Scales cians cewesedh ey eseGhuae ase 1. sebe, p. 129. 
Dorsal scales scarcely larger than ven- 
trals, slightly imbricate, smooth or 
indistinctly keeled ; caudal scales equal 2. cyclurus, p. 130. 
Dorsal scales granular, smaller than ven- [p. 131. 
trals; caudal scales equal.......... 3. quadrimaculatus, 
1. Hoplurus sebe. 
Oplurus braziliensis, Gray, Cat. p. 222. 
Oplurus torquatus, (nom Cuv.) Guérin, Icon. R. A., Rept. pl. xii. fig. 3. 
seb, Dum. § Bibr. p. 361. 
Hoplurus seb, Fitzing. Syst. Rept. p.76; Peters, Reise n. Mossamb, 
ii. p. 31, pl. vi. fig. 1. 
barnardi, part., Peters, Mon. Berl. Ac. 1854, p. 616. 
torquatus, Peters, in Decken’s Reisen O, Afr. iii. i. p. 14; 
Boettger, Abh. Senck, Ges. xii. 1881, p. 476. 
Upper head-scales keeled; occipital large; anterior border of 
ear strongly denticulated. A small nuchal crest. Dorsal and 
nuchal scales rhomboidal, imbricate, strongly keeled, larger than 
laterals and ventrals ; latter as well as gulars feebly keeled. Scales 
on the limbs strongly keeled, as large as or a little larger than the 
dorsals. Tail about once and a half as long as head and body, with 
whorls of large spinose keeled scales, separated from each other by 
* Oplurus saxicola, Grandid. Rev. et Mag. Zool. (2) xxi. 1869, p. 340. 
Oplurus fierinensis, id. ibid. p. 341.—Fierin, Madagascar. 
VOL. Il. K 
