184 IGtTAlTID^. 



a-c. djSt&yg- Canelos, Ecuador. Mr. Buckley [C], 



d. cJ, Sarayacii, Ecuador. Mr. Buckley [C.J. 



e. cJ. Peruvian Amazons. Mr. E. Bartlett [C.]. 



3. Urocentron castor. 



Dorypliorus castor, Cope, Proc. Am. Phil. Soc. xi. 1870, p. 556. 



Apparently very closely related to the preceding. Nostril between 

 two scales. Scales of the sides scarcely smaller than dorsals and 

 ventrals. Tail wider than the body. Colour blackish olive, gradu- 

 ally lighter to the head, which is thickly black-spotted on a green 

 ground ; a broad crescentic black collar, which is broadly light-mar- 

 gined behind, much more indistinctly before ; the posterior border 

 is again broadly margined wdth black behind ; limbs closely green, 

 spotted on a blackish ground ; tail uniform brown ; belly black, on 

 the sides dark green, femora black. 



Length to vent 60 millim. ; tail 33 millim. 



Pebas, Ecuador. 



31. PHYMATURUS. 



Phymaturus, Gravenh. Nuva Acta Ac. Leoj).- Carol, xviii. 1838, ii. 



p. 74U ; Gray, Cat. Liz. p. 220, 

 Centrura, Bell, Zool. Beagle, Pept. p. 25 ; A. Bum. Arch. Mus. viii. 



p. 556. 



Tympanum distinct. Body depressed ; no dorsal crest ; dorsal 

 scales small, juxtaposed or subimbricate, uniform. Upper head- 

 scales small. A transverse gular fold ; no gular pouch. Digits 

 slightly compressed, with keeled lamellae inferiorly. No femoral 

 pores ; males with a series of pores on the front edge of the vent. 

 Tail rather short, subcylindrical, with whorls of spinose scales. All 

 the teeth trilobate; pterygoid teeth. A sternal fontanelle. No 

 abdominal ribs. 



Chili. 



1. Phymaturus palluma. 



Phymaturus palluma, Gray, Cat. p. 226. 

 Lacerta palluma, Molina, Sagqio sulla Storia nat. del Chile, 1810, 



p. 189. 

 Stellio palluma, Baud. Pept. iv. p. 46. 

 Phymaturus palluma, Gravenh. I. c. p. 750, pi. Iv. fig. 2. 

 Centrura flagellifer, Bell, I. c. pl. xiv. fig. 2 ; A. JDuni. I. c. p. 657, 



pl. xxii. fig. 5. 

 Oplurus bibronii, Guichen. in Gay, Hist. Chile, Pept. p. 53, pl. iii. 



fig. 2 ; A. Bum. Cat. Meth. Pept. p. 84. 



Head small, snout short; canthiis rostralis indistinct, nostril 

 superior ; ear-opening moderately large. Head-scales small, equal, 

 subconical on the temples. Throat and sides of neck strongly 

 plicate. Body much depressed. Dorsal scales very small, granular. 



