412 XEIID^. 



nine scales from occiput to base of tail, and twenty-six from collar 

 fold to vent. jS'ine 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 9 From snout to vent 47 



Para. 



26. PROCTOPOHUS. 



Proctcporus, Tschudi, Arch. f. Naturg. 1847, p. 53 : Peters, Abh. 



Berl. Ac. 1862, p. 220. 

 Riama, Gray, Proc. Zool. Soc. 1858, p. 445. 

 Emphrassotis, O'Shaughn. Ami. ^- Mar/. N. H. (5) iv. 1879, p. 295. 



Tongue moderatel}' elongate, arrow-headed. Lateral teeth conical, 

 indistinctly bicuspid. Head with large regular shields ; frontonasal 

 separating the nasals ; no praefroutals ; 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, peutadactyle. 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 prjeaual pores in both sexes. 



Andes of Ecuador and Peru. 



Synopsis of the Sjpecies. 



I. Dorsal scales feebly keeled or striated. 

 Fifty-four scales from occiput to base of tail; 



a loreal 1. pachyarus, 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 



body 3. simoterus, p. 414. 



Forty-four scales round the middle of the 



body 4. meleayris, p. 4 15. 



1. Proctoporus pachjnirus. 



Proctoporus pachyurus, Tschudi, I. c. p. 54, and Faun. Per., Herp. 



p. 43, pi. ii. fig. 2. 

 Ecpleopus (Proctoporus) pachyurus, Peters, I.e. p. 221, pi. ii. fig. 2. 



Eody elongate, limbs weak. Frontonasal much longer than broad, 

 larger than frontal ; frontoparietals forming a long suture ; inter- 



