384 TEIID^. 



labials ; chin-shields ver)' large, one anterior and three pairs, the 

 first two paii's in contact ; gular scales equal, lanceolate-triaugular, 

 strongly keeled and imbricate, arranged in oblique rows. Dorsal 

 scales very large, those on the middle of the back largest and their 

 exposed portion as broad as long, all very strongly imbricate, leaf- 

 shaped, ending in a sharp point, and very strongly keeled ; on the 

 hinder part of the back the keels become continuous, forming ridges 

 which become most conspicuous on the tail. The ventral scales 

 similar to the dorsals, but very feebly keeled and arranged in longi- 

 tudinal and transverse series. Eighteen to twentj^ scales round the 

 middle of the body ; twenty-one to twenty-four scales from occiput 

 to sacrum inclusive ; twenty-five or twenty-six from chin-shields to 

 proeanals. Latter, four anterior and four posterior, all keeled, the 

 postero-median pair largest. Limbs with large imbricate keeled 

 scales. Males with sixteen to eighteen femoral pores on each side. 

 Tail with large keeled imbricate scales, largest on the upper surface, 

 where the keels form four strong, longitudinal, slightly denticulated 

 ridges. Brown above, yellowish on the upper surface of the head 

 and nape ; back indistinctly variegated with darker and lighter ; tail 

 with yellowish dark-edged spots, having a tendency to form rings ; 

 lower surfaces yellowish white ; labials and chin-shields brown- 

 spotted ; each ventral shield with a more or less marked brown 

 spot. 



<■ 2, 



millim. millim. 



Total length .152 197 



Head 13 16 



Width of head 9-5 11 



From end of snout to fore limb 23 28 



From end of snout to vent 56 74 



Fore limb 19 23 



Hind limb 30 37 



Tail 96 123 



Ecuador. 



a-h. S 2 • Pallatanga. ]Mr. Buckley [C.l. 



c-d. (S 2 . Canelos." Mr. Buckley [C.]. 



2. Alopoglossus carinicaudatiis. 



Lepidosoma carinicaudatum, Cope, Journ. Ac. Philad. (2) viii. 1876, 

 p. 160. 



This species is probably closely allied to the preceding, but, judging 

 from Cope's description, must be considered distinct. The limbs are 

 shorter; the temporal scales are smooth, at least anteriorly ; twenty- 

 one scales round the body ; an oval median anterior prseanal, instead 

 of a pair ; eleven femoral pores on each side. The coloration is very 

 diff'erent : — Colour above cinnamon-brown, below yellow ; sides, 

 from ear to an indefinite point on the tail, black, inclosing a narrow 

 yellow band from axilla to groin ; black on scapular region, pale- 



