318 Annals of the Carnegie Museum. 



Genus Proctoporus Tschudi. 

 26. Proctoporus pachyurus Tschudi. 



■ Proctopotus pachyurus Tschudi, Arch. f. Naturg., 1847, p. 53. 

 Proctoporus pachyurus Boulenger, Cat. Lizards, II, 1885, p. 412. 



The museum possesses a single male specimen of this rare lizard, 

 C. M. No. 1043, collected by Lola Vance at Tarma, Peru. This region 

 is six thousand feet above the sea. The differences between our speci- 

 men and those previously described do not seem to me to justify dis- 

 tinguishing it as a new species. The description of the specimen which 

 follows is made to supplement those of this species already published. 



Frontonasal barely longer than broad, in contact with the large 

 first supraciliary; broader than the frontal but of the same length; 

 frontoparietals forming a long suture; interparietal pentagonal, 

 slightly narrower behind than in front, half as wide as, and a little 

 shorter than, the parietals; posterior margins of the parietals and inter- 

 parietal nearly a semicircle; five occipitals in a curved row, the middle 

 and lateral ones smaller than the two on either side of the central 

 shield; a row of ten small postoccipitals; three supra-oculars; a large 

 loreal; a pre-orbital; four small infra-orbitals in a single row; temples 

 covered with irregular shields, the upper ones large; seven upper and 

 seven lower labials; a large anterior and four pairs of chin-shields, the 

 third pair narrowly in contact by their anterior portions, the fourth 

 pair widely separated by several scales; the gular scales nearest the 

 chin-shields large, eleven rows to the edge of the anterior collar fold, 

 the fifth row very small; one row of scales between the anterior and 

 posterior collar-folds; twelve collar-shields. 



Dorsal scales elongate, quadrangular, keeled, juxtaposed, in con- 

 tinuous transverse series, except in the lumbar region, where the rows 

 are broken along the mid-dorsal line; fifty-four series between the post- 

 occipitals and the base of the tail. Ventral shields nearly square, in 

 twelve longitudinal and twenty-five transverse series. Two large 

 anterior and four posterior pre-anal scales. Shields of limbs smooth, 

 large on the anterior and upper surfaces. Tail tapering, scales of 

 upper surface keeled, squamation like that of the body. Eight femoral 

 pores. 



Olive-gray above, ihe sides darker, the tail lighter; scales spotted 

 with brown. A light line along each side of the back, bordered on the 

 outer side by brown, commencing on the snout, passing above the eye, 



