12. ALOPOGLOSSUS. 385 



bordered above ; from nape to tail a median series of small black 

 spots ; head brown ; throat yellow. 



millim. millim. 



Total length (tail re- From end of snout 



produced) 115 to axilla 21 



Length of head to From end of snout 



ear 11 to vent 50 



Width of head 8-5 Hind limb 23 



Upper Amazons. 



3. Alopoglossiis buckleyi. 



Leposoma bucklevi, O' Shauyhn. Proc. Zool. Soc. 1881, p. 233, pi. xxii. 

 till-. 2*. 



o' 



Differs from yl. cop /i in the fcUowing points: — Suture between 

 the pr;ufrontals extremely short ; parietals and interparietal with 

 longitudinal ridges ; all three pairs of chin-shields in contact ; gular, 

 veutral, and prteanal scales smooth ; dorsal scales much narrower ; 

 twenty-nine scales round the body ; thirty-one scales from occiput 

 to sacrum inciusivelj', and twenty-eight from gulars to praiauals. 

 Femoral pores fourteen. Caudal keels weaker, not forming such 

 regular ridges. Upper surfaces pale brown, with a longitudinal 

 row of black spots on middle of back ; a light lateral stripe from the 

 supraorbital angle, along the parietal border and extreme edge of the 

 dorsal surface, to the tail ; sides of body black, variegated with blue 

 or yellowish spots on the neck ; entire mental region yellowish, 

 without spots ; a dark coloration predominates over the whole 

 inferior surface of the throat, of the body, limbs, and tail, the 

 scales being blackish at their root or for half their length, and 

 yellowish at the tips. 



millim. millim. 



Total length (tail re- From end of snout 

 produced) 115 to vent 51 



Head 12 Fore limb 16 



Width of head .... 8 Hind limb 23 



From end of snout 

 to fore limb .... 21 



Ecuador. 



a. J . Canelos. Mr. Buckley [C.]. (Type.) 



* The description is incorrect, owing to the imperfect state of preservation 

 of the unique specimen. The epideruiis has come off in many places, and 

 the .shape of tiie scales has changed ; this explains the sudden modification of 

 the pectoral into t.iie ventral scales, the former being intact, the latter deprived 

 of the epidermis. 



VOL. II. 2 C 



