27. SCOLECOSATTRrS. — 28. COPHI.VS. 417 



2. Scolecosaurus pallidiceps. 

 Brachypus pallidiceps, Cope, Proc. Ac. I'hilad. 1862, p. 356. 



Fingers four, toes three. Scales in thirty-four series from axilla 

 to groin, and twenty-three longitudinal. Frontonasal longer than 

 broad, hexagonal ; five temporals ; two supraoculars ; frontal much 

 longer than broad. Otherwise like S. cuvicri. General colour 

 plumbeous, the scales margined with black ; head cinereous ; a light 

 brown band extends along each side of the back, separated from its 

 fellow by four rows of scales. Total length 153 millim. 



Truando, Colombia. 



28. COPHIAS* 



Chalcides {non Law.), Bonnat. Enci/cl. Meth., Erp. p. 67 ; Daud. 



Rept. iv. p. 3G7 ; Wier/m. Herp. Mex. p. 12. 

 Cbalcis (non Fahr.), Merrein, Tent. Sijst. Ampli. p. 75 ; Gray, Cat Li::. 



p. 57. 

 Colobus {non Il/iff.), Men: I. c. 

 Cophias, Fitzhu). N. Class. Rept. p. 20 ; Wiegm. I. c. 

 Chalcis, part., Wagler, Syst. A?nph. p. 196. 

 Chalcides, part., Dion. S,- Blbr. v. p. 450. 

 Microdactylus (Tsflmdi), Gray, I. c. 

 Bachia, Gray, I. e. p, 58. 

 Herpetochalcis, Bocttyer, Ber. Offenh. Ver. Naturk. 1883, p. 150. 



Tongue moderately elongate, arrow-headed. Teeth conical. Head 

 with large regular shields ; frontonasal separating the nasals ; pra}- 

 frontals and frontoparietals absent ; nostril pierced in the suture 

 between the nasal and first labial. Eyes minute, eyelids developed. 

 No ear-opening. Body and tail elongate, vermiform ; limbs rudi- 

 mentary, the anterior with clawless, tubercle-like digits, the poste- 

 rior similar to the anterior or styliform, undivided. Scales smooth, 

 forming regular annuli, and also longitudinal series on the belly ; 

 the dorsals narrow, either quadrangidar and juxtaposed, or hex- 

 agonal and overlapping; the ventrals broader, quadrangular, jux- 

 taposed. No collar fold. Males with pra^anal pores. 



South America. 



Synopsis of the Species. 



I. Dorsal scales quadrangular, juxtaposed. 



Hind limb tridactyle ; an interparietal ; three 



supraoculars 1, triductylns, p. 41 S. 



Hind limb didactylo ; an interparietal ; two 



supraoculars 2. heteropus, p. 418. 



Hind limb undivided, styliform ; no inter- 

 parietal (3. Jlavescens, p. 418. 



II. Dorsal scales hexagonal, overlapping. 



Hind limb styliform, undivided 4. dorhiynyl, p. 419. 



* Chalcides heteropus, Licht. & Mart. Noiiienel. Rept. Mus. Berol. p. 17.-- 

 Veneziiela. 



VOL. II. 2 E 



