21. ECPLEOPUS. 401 
Sta Fé de Bogota. 
a~b. 2 & her. Sta Fé de Bogota, Prof. Peters [P.]. (Typical 
specimens. ) 
21. ECPLEOPUS. 
Ecpleopus, Dum. § Bibr. v. p. 434; Tschudi, Arch. J. Naturg. 1847, 
p. 47; Peters, Abh. Berl, Ac. 1862, p. 195, 
Cercosaura, part., Gray, Cat. p. 60. 
Aspidolemus, Peters, l. c. p. 199. 
Tongue moderately elongate, arrow-headed. Lateral teeth com- 
pressed, bi- or tricuspid. Head with large regular shields; fronto- 
nasal separating the nasals; prefrontals and frontoparietals pre- 
sent; nostril pierced in the middle of a single nasal or in the suture 
between two nasals. yelids developed, lower with a non-trans- 
parent disk composed of several scales. Ear exposed. Limbs well 
developed, pentadactyle. Dorsal scales juxtaposed or but slightly 
imbricate, elongate subhexagonal, smooth or very slightly keeled, 
arranged in regular transverse series; lateral scales small; ventral 
plates large, quadrangular, smooth, arranged in regular longitudinal 
and transverse series. A slight collar fold. Tail cylindrical. No 
preeanal or femoral pores. 
South America. 
1. Ecpleopus gaudichaudii. 
Cercosaura gaudichaudi, Gray, Cat. p. 60. 
Ecpleopus gaudichaudii, Dum. §& Bibr. v. p. 436; Tschudi, lic. ; 
Guichen. ir Casteln, Amér, Sud, Rept. p. 34, pl. vii. fig. 2; Peters, 
le. p. 195. 
Nasal single; no loreal; prefrontals forming a suture, separated 
from the loreal by the anterior supraciliary, which is large, and 
reaches the frontonasal; frontal twice as long as broad, smaller 
than the interparietal ; latter much longer than broad, as broad as, 
and a little shorter than, the parietals; three supraoculars. Gular 
scales small, squarish. Dorsal scales longer than broad, quadran- 
gular, obtusely keeled, in thirty-three transverse series from the 
occiput to the base of the tail; ventrals scarcely larger than dorsals, 
smooth. Three nearly equal preanals, on a transverse row. 
Reddish brown above, with one or two light longitudinal lines on 
each side ; lower surfaces white. 
millim millim. 
Total length ...... 120 Fore limb........ 9 
Head, sea essa ved 10 Hind limb ...... 12 
From end of snout 
to vent ........ 40 
Brazil. 
2D 
VOL. II. 
