126 GEKRHOSAtTRID^. 



3. CORDYLOSAURUS. 



Pleurostriclius, part., Oray^ Cat. Liz. p. ol. 

 Cordylosaurus, Gray, Proc. Zool. Soc. 186-5, p. G41. 



Nostril pierced between the first labial and two nasals ; no 

 praefrontal shields ; frontoparietals present or absent. Lower eyelid 

 with a transparent disk. A strong lateral fold. Dorsal and ventral 

 scales forming straight longitudinal and transverse series. Sub- 

 digital scales keeled. The greater part of the tongue covered with 

 rhomboidal papillaj. 



South-west Africa. 



1. Cordylosaurus trivittatus. 



Gcrrhosaurus trivittatus, Peters, Mon. Berl. Ac. 1862, p. 18, and 



(Efvers. Vet. Akad. Fiirh. 186!), p. 6o9. 

 Cordylosaurus trivirgatus, Gray, I. c. pi. xxxviii. fig. 2. 

 • trivittatus, Gutith. Zool. Rcc. 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 ; vcntrals in 8 longitudinal series. Femoral pores 7 to 10 on 

 each side. Pale olive, above with three broad dark brown longi- 

 tudinal bands. 



millim. 



Fore limb 11 



Hind limb 17 



Tail 77 



Mr. Anderson [C.1. (Type 



of C. trivirgatus.) 

 J. J. Monteiro, Esq. [P.]. 



2. Cordylosaurus subtessellatus. 



Pleurostrichus subtessellatus, Gray, Cat. p. 51. 

 Gerrhosaurus subtessellatus, Smith, III. S. Afr., Rept. pi. xli. fig. 2, 



and pi. xlii. figs. 17-20. 

 Cordylosaurus subtessellatus, Gray, Proc. Zool. Soc. I860, p. 641. 



Yery 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 Xamaqualand. 



a. Ad. Great Namaqualand. Sir .V. Smith [P.]. (Type.) 



