402 TETIDiE, 



2. Ecpleopus affinis. 



Cercosaui'us ^jaudichaudii {non D. »§* B.), Giinth. Proc. Zool. Soc. 



1859, p. 40o. 

 Ecpleopus (Aspidolfemus) affinis, Peters, I. c. p. 199, pi. iii. fig. 1. 



Snout short, obtuse ; body rather elongate. Two nasals, nostril 

 between ; a loreal ; prsefrontals usually forming a short suture ; 

 frontal broad ; interparietal a little larger than the latter and than 

 the parietals ; three small occipitals, median smallest ; three supra- 

 oculars ; anterior supraciliary large, not reaching the frontonasal ; 

 a row of small infraorbitals ; temples scaly ; seven or eight upper 

 labials, fourth largest, under the eye ; six lower labials ; chin- 

 shields, one anterior and four pairs, the two first pairs forming 

 a suture, the others widely separated by the rather larger 

 anterior gulars ; a short double longitudinal row of transversely 

 enlarged gulars in front of the collar ; latter composed of six to 

 eight scales. Dorsal scales longer than broad, hexagonal, feebly 

 keeled*, separated from the ventrals by very small irregular scales; 

 thirty-nine to forty-one scales round the middle of the body, ventrals 

 included ; forty-six to forty-eight scales from occiput to sacrum 

 inclusively. Ventral plates quadrangular, smooth, in eight or ten 

 longitudinal and twenty-seven or twentj'-eight transverse rows. 

 Prseanals six, two pairs larger ; sometimes a small additional plate 

 wedged in between the posterior pair. Limbs with large smooth 

 shields ; upper surface of tibia with small keeled scales. Tail long, 

 tapering to a fine point, covered with scales similar to those of the 

 body, the upper and lateral keeled, the lower smooth. Olive-brown 

 above ; sides closely spotted with black ; a yellow, black-edged line 

 on each side, along the canthus rostralis and supraciliaries, becoming 

 indistinct on the body ; a series of small black spots along the 

 middle of the bodj', more or less confluent into a vertebral line ; 

 lower surfaces greenish white, spotted with blackish. 



. ^.- ?•. 



millira. millim. 



Total length 162 193 



Head 13 14 



Width of head 8 8 



From end of snout to fore limb 20 23 



From end of snout to vent 52 65 



Fore Umb 18 19 



Hind limb 27 28 



Tan 110 128 



Andes of Ecuador. 



a,b,c. d $ . W. Ecuador. Mr. Eraser [C.]. 



d. ? . lutac. Mr. Buckley [C.]. 



* The scales are perfectly smooth when the epidermis is removed, and such 

 is probably the case with Peters's type specimen. 



