28 TYPHLOPIDiE. 



Ico7i. G4n. p. 10, 1. 4, pi. \i. ii<^. 1, & 1. .% pis. v. & vi. fig. 7 



(1864). 

 Argyrophis reticulatus, Gray, Cat. Liz. p. 137 (1845). 

 Ophtlialmidion cmssum, ^. Bum. Cat. Meth. liept. p. 202 (1851). 



Snout rounded ; nostrils lateral. Kostral hardly one third the 

 width of the head, extending to the level of the eyes ; nasal incom- 

 pletoly divided, the cleft proceeding from the second labial ; a prae- 

 ocuhir, a little narrower than the nasal or the ocular, in contact 

 with the second aud third labials ; eyes distinct ; upper head-scales 

 slightly enlai-ged ; four upper labials. Diameter of body 22 to 30 

 times in the total length ; tail broader than long, ending in a spine. 

 20 scales round the body. Dark brown or black above, uniform or 

 the scales edged with lighter ; snout, tail, aud lower parts yellowish. 



Total length 300 millim. 



Tropical South America. 



30. TypMops tenuis. 



Typhlops tenuis, Salvin, Proc. Zool. Soc. 1860, p. 454. 



perditus, Peters, Man. Berl. Ac. 1869, p. 435 ; Bocourt, Miss. 



Sc. Mex., Rejjt. p. 499, pis. xxix. fig. 3, & xxx. fig. 3 (1882). 



basimaculatus, Cope, Proc. Ac. Philad. 1866, p. 320. 



prielongus, F. Miiller, Verh. naturf. Ges. Basel, vii. 1885, 



\ p. 674. 



Snout rounded, very prominent ; nostrils lateral. Eostral about 

 cue third the width of the head ; nostril between two nasals, the 

 anterior in contact with the first and second labials ; a prceocular, 

 as large as the ocular, in contact with the second and third labials; 

 eyes hidden or just distinguishable ; upper head-scales scarcely 

 enlarged ; four upper labials. Diameter of body 50 to 02 times 

 in the total length ; tail as long as broad or a little broader than 

 long, ending in a spine. 18 scales round the body. Pale brown 

 above, yellowish inferiorly ; or yellowish, each dorsal scale with a 

 brown spot. 



Total length 310 millim. 



Central America. 



