412 TEIIDE. 
nine scales from occiput to base of tail, and twenty-six from collar 
fold to vent. Nine or ten femoral pores on each side. Light brown 
above, with small blackish dots and marblings; lower surfaces 
blackish brown. 
millim, millim. 
Total length ...... 113 Width of head.... 6°5 
Head..........0.. 9 From snout to vent 47 
Para. 
26. PROCTOPORUS. 
Proctcporus, Tschudi, Arch. f. Naturg. 1847, p. 58; Peters, Abh. 
Berl, Ac. 1862, p. 220, 
Riama, Gray, Proc. Zool. Soc, 1858, p. 445. 
Emphrassotis, O'Shauyhn. Ann. § Mag. N. H. (5) iv. 1879, p. 295. 
Tongue moderately elongate, arrow-headed. Lateral teeth conical, 
indistinctly bicuspid. Head with large regular shields ; frontonasal 
separating the nasals; no prefrontals; frontoparietals present ; 
nostril pierced in the middle of a single nasal. Eyelids developed, 
lower with a non-transparent disk. Ear exposed. Limbs well de- 
veloped, short, pentadactyle. Dorsal scales elongate-quadrangular, 
smooth or striated, juxtaposed, forming regular transverse rows, 
separated from the ventral shields by a fold extending from axilla 
to groin; ventrals large, quadrangular, smooth, arranged in longitu- 
dinal and transverse series. A strong collar fold. Tail cylindrical. 
Femoral or preeanal pores in both sexes. 
Andes of Ecuador and Peru. 
Synopsis of the Species. 
I. Dorsal scales feebly keeled or striated. 
Fifty-four scales from occiput to base of tail; 
GMOreal, iy baa sregie vata ee een Rae 1. pachyurus, p. 412. 
Thirty-seven to forty-four scales from occi- 
put to base of tail; no loreal.......... 2. unicolor, p. 413. 
II. Dorsal scales perfectly smooth ; thirty-four scales from occiput 
to base of tail. 
Thirty-six scales round the middle of the 
DOD! sco see ah we Bieta Sai rewds nite ins 3. simoterus, p. 414. 
Forty-four scales round the middle of the 
DOGY,- suk xcs iiaiaueratt We: alee 4a Senengeirned teas 4. meleagris, p. 415. 
1. Proctoporus pachyurus. 
Proctoporus pachyurus, Tschudi, 1. c. p. 54, and Faun. Per., Herp. 
p. 45, pl. it. fig. 2. : 
Ecpleopus (Proctoporus) pachyurus, Peters, Uc. p. 221, pl. ii. fig. 2. 
Body elongate, limbs weak. Frontonasal much longer than broad, 
larger than frontal; frontopurietals forming a long suture; inter- 
