126 GERRHOSAURID, 
3. CORDYLOSAURUS. 
Pleurostrichus, part., Gray, Cat. Liz. p. 51. 
Cordylosaurus, Gray, Proc, Zool, Soc. 1865, p. 641. 
Nostril pierced between the first labial and two nasals; no 
prefrontal shields; frontoparietals present or absent. Lower eyelid 
with a transparent disk. A strong lateralfold. Dorsal and ventral 
scales forming straight longitudinal and transverse series. Sub- 
digital scales keeled. The greater part of the tongue covered with 
rhomboidal papille. 
South-west Africa. 
1. Cordylosaurus trivittatus. 
Gerrhosaurus trivittatus, Peters, Mon. Berl. Ac. 1862, p. 18, and 
Csfvers. Vet. Akad. Forh. 1869, p. 659. 
Cordylosaurus trivirgatus, Gray, 1. c. pl. xxxviii. fig. 2. 
: trivittatus, Giinth. Zool. fec. 1865, p. 148. 
Head and body depressed. Dorsal scales tri- or quinquecarinate, 
the central keel strongest, in 15 longitudinal and 52 to 55 transverse 
series ; ventrals in 8 longitudinal series. Femoral pores 7 to 10 on 
each side. Pale olive, above with three broad dark brown longi- 
tudinal bands. 
millim. millim. 
Total length ...... 121 Fore limb ........ 11 
Head eicscvecvsss 8 Hind limb ........ 17 
Width of head .... 6 Pail. 24 sesame 77 
Body ........ sgae 86 
South-west Africa. 
a, Ad. Great Namaqualand. 
b. Ad. Damaraland. Mr. Anderson [C.]. (Type 
of C. trivirgatus.) 
ce. Hgr. Benguela. J. J. Monteiro, Esq. [P.]. 
2. Cordylosaurus subtessellatus. 
Pleurostrichus subtessellatus, Gray, Cat. p. 51. 
Gerrhosaurus subtessellatus, Smith, Ill. S. Afr., Rept. pl. xli. fig. 2, 
and pl. xlii. figs. 17-20. 
Cordylosaurus subtessellatus, Gray, Proc. Zool. Soc. 18@5, p. 641. 
Very closely allied to the preceding, from which it differs in the 
dorsal scales not being distinctly keeled, and in coloration. Middle 
of the back yellowish brown, the sides checkered white and blackish” 
brown ; sides of body dark brown; lower surfaces brownish. 
From snout to vent 50 millim. 
Great Namaqualand. 
a, Ad. Great Namaqualand. Sir A. Smith [P.]. (Type.) 
