124 GERRHOSAURIDE. 
2. TETRADACTYLUS. 
Chalcides, part., Daud. Rept. iv. p. 359. 
Tetradactylus, Merrem, Tent. Syst. Amph. p. 75. 
Tachydromus, part., Merrem, 1. e. p. 69. 
Cicigna, Gray, Ann. Phil. (2) x. 1826, p. 201. 
Saurophis, Fitzing. N. Classif. Rept. p. 20; Wagl. Syst. Amph. 
p. 158; Wiegm. Herp. Mex. p. 11; Dum. § Bibr.v. p. 387; Gray, 
Cat. Liz. p. 51. 
Gerrhosaurus, part., Dum. § Bibr. p. 368. 
Caitia, Gray, Ann. N. H. i. 1838, p. 389, and Cat. p. 52. 
Pleurostrichus, part., Gray, Cat. p. 51. 
Nostril pierced between the first labial and two nasala; no pre- 
frontal shields; frontoparietals present. Lower eyelid scaly. A 
strong lateral fold. Dorsal and ventral scales forming straight longi- 
tudinal and transverse series. ' Digits, if present, smooth inferiorly. 
Tongue entirely covered with oblique plice converging anteriorly 
towards the median line. 
South Africa. 
Synopsis of the Species. 
Limbs short but well developed, pentadactyle. 1. seps, p. 124. 
Limbs very short, tetradactyle .......... 2. tetradactylus, p. 125. 
Limbs minute, undivided .............. 3. africanus, p. 125, 
1. Tetradactylus seps. 
Pleurostrichus sepiformis, Gray, Cat. p. 51. 
Lacerta seps, Linn. S. N. i. p. 363. 
Scincus sepiformis, Schneid. Hist. Amph. ii. p. 191. 
Tachydromus seps, Merr. Tent. p. 69. 
Cicigna sepiformis, Gray, Ann. Phil. (2) x. 1825, p. 201. 
Gerrhosaurus sepiformis, Dum. §& Bibr, v. p. 884; Smith, Ill. 8. Afr, 
Rept. pl. xli. fig. 1,* and pl. xlii. figs. 18-16; Gravenh. Nov. Act. 
Ac. Leop.-Carol. xxiii. 1851, i. p. 301, pl. xxvii. 
Body elongate ; limbs short but well developed and pentadactyle ; 
the length of the hind limb equals or exceeds the distance between 
the end of the snout and the fore limb. Dorsal shields strongly 
striated; the posterior dorsal and the upper caudal shields with a 
stronger median keel; dorsal shields in 13 longitudinal and 57 to 
61 transverse series (counting from the parietal shield to the base 
of the tail); ventrals in 8 longitudinal series. Femoral pores 9 to 
12 on each side. Olive or reddish brown above, the edges of the 
scales darker; sides usually darker; upper lip with small light 
dark-edged spots ; lower surfaces olive or grey. 
millim, millim. 
Total length ...... 191 Fore limb ........ 18 
Head...... ms I 10 Hind limb........ 21 
Width of head .... 7 Pall © ase temcatesceng a aes 132 
Body: wcceweyaas os 49 
