20. HopLURUs.—21. sTENOCERCUS. 1381 
3. Hoplurus quadrimaculatus, 
Oplurus quadrimaculatus, 4. Dum. Cat. Méth, Rept. p. 83. 
Centrura quadrimaculata, 4. Dum. Arch, Mus. viii. p. 558, pl. xxii. 
fig, 4. 
POplwus montanus, Grandid. Rev. § Mag. Zool. (2) xxi. 1869, 
p. 340. 
Hoplurus quadrimaculatus, Peters, Reise n. Mossamb. iii. p. 81. 
Upper head-scales small, smooth; occipital slightly enlarged ; 
anterior border of ear denticulated. No nuchal crest. Dorsal scales 
very small, granular, flat, smooth, smaller than ventrals; latter 
small, subimbricate, smooth ; gular scales granular. Body and base 
of tail much depressed. Scales on the limbs keeled and much larger 
than those on the body. Tail about once and two thirds as long as 
head and body, with whorls of rather small, spinose, keeled scales, 
the size of which equals hardly twice that of the tibials. Dark 
olive-brown, with small round lighter spots and transverse series of 
irregular roundish black spots, which are however sometimes re- 
duced to one pair on each side behind the shoulder; a series of more 
or less confluent light spots on each side of the back; throat and 
breast grey, or marbled with grey; belly and lower surface of 
thighs whitish. 
Total length ....  .... 350 millim. 
Head ies bid gale wees rasied 30.—C*#a, 
Width of head ........ Das os, 
Body cat agepeiiaudes 100_s—, 
Fore limb ............ D2» v5 
Hind limb........ ae OB) ogy 
Darl viet ics erent e 220, 
Madagascar. 
a, Ad. Madagascar. Col. Lyoll [C]. Zool. Soc. 
b-e, f-g. Ad., hgr., & yg. _E. Betsileo. Rev. D. Cowan [C.]. 
21. STENOCERCUS. 
Stenocercus, Dum. & Bibr. iv. p. 350; Fitzing. Syst. Rept. p.71; 
Gray, Cat. Liz. p. 219. 
Trachycyclus, Dum. § Bibr, lc. p. 855; Fitzing. le.; Gray, lc. 
Microphractus, Giinther, Proc. Zool. Soc, 1859, p. 90. 
Tympanum distinct. Body subcylindrical or depressed ; dorsal 
crest absent, or represented by a slightly serrated ridge; dorsal 
scales more or less imbricate. Upper head-scales small, smooth. 
A curved fold in front of each shoulder, not extending across the 
throat. Digits compressed, with keeled lamellae inferiorly. No 
femoral or anal pores. ‘Tail subcylindrical or compressed, with 
whorls of strongly keeled or spinose scales. Lateral teeth tricuspid : 
pterygoid teeth present or absent. A large sternal fontanelle. No 
abdominal ribs. 
Western South America. 
K2 
