50 REPTILIA. 



Brazil produces another, Pygopus cariococca, Spix, xxviii, 2, 

 larger, with undivided feet like those of the lepidopode, Lacep., 

 but more pointed, and with entirely smooth scales. It is green- 

 ish, with four longitudinal blackish lines.(l) 



Chalcides, Daud. 



Elongated Lizards resembling Serpents; but the scales, instead 

 of being arranged like tiles, are rectangular, forming transverse 

 bands, which do not encroach on each other like those on the tails 

 of ordinary lizards. 



Some of them have a furrow on each side of the trunk, and a still 

 apparent tympanum. They are allied to Cordylus just as Seps is 

 connected with Scincus, and lead in many points to Pseudopus and 

 Ophisaurus. 



A five-toed species is known, Lac. seps, L. which inhabits the 

 East Indies. 



Another with four toes, Lac. tetradactyla, Lacep. Ann. du 

 Mus. II, lix, 2.(2) 

 III others the tympanum is concealed, leading directly to Chi- 

 rotes, and thence to the Amphisbsenae. 



There is one species with five toes,(3) 



A second in Brazil with four anterior and five posterior, the 

 Heterodactylus imbricatus, Spix, xxvii, 1. 

 A third with four to each foot. (4) 



A fifth, whose toes, to the number of five before and three 

 behind, are reduced to such small tubercles, that it has at one 

 time been considered as having three, and at another but one.(5) 

 From Guiana. 



Chirotes, Cuv. 



Similar to Chalcides in their verticillate scales, and still more so 

 to the Amphisbaenae in the obtuse form of their head; but distin- 

 guished from the former by the absence of hind feet, and from the 



(1) The Pyg. striatus, Spix, XXVIII, 1, appears to me to be the young of the 

 same species. 



(2) It is the g-enus Tetradacttlus of Men*, or Saurophis of Fitzinger. 



(3) This species forms the genus Chai-cides of Fitzinger. 



(4) The genus Brachxpus, Fitz. 



(5) In the first case it is the Chalcide, Lacep. pi. sxxii, the Chamxsaura 

 cophias, Schn., the genus Cuaecis, Merr. and the genus Cophias, Fitz.; in the 

 second it is the Chakide monodadyle, Daud. or the genus Colobus, Merr.; but 

 all these genera are reducible to one single species. 



