6 



TTPHXOPID^. 



58 times in the total length ; tail once and a half as long as broad, 

 rounded. 22 scales round the body. Dark brown ; head and anal 

 region whitish. 



Total length 158 millim. ' 



Costa Eica. 



^ 3. HelmintliopMs petersii. (Plate I. fig. 1.) 



Helminthophis petersii, Boideng. Ann. 8^ Mag. N. H. (6) iv. 1889, 

 p. 360. 



Eostral half the width of the head, extending to between the 

 eyes, truncate posteriorly, and forming a broad suture with the 

 frontal ; two superposed praeoculars and a subooular ; eye distin- 

 guishable under the ocular ; four upper labials, first largest, third in 

 contact with the subocular. Diameter of body 55 times in the 

 total length ; tail a little longer than broad, ending in a spine. 20 

 scales round the body. Brown, each scale darker in the centre; 

 snout and anal region yellowish. 



Total length 110 millim. 



Ecuador. 



a. Guayaquil. Mr. Fraser [0.]. (Type.) 



4. HelmintliopMs guentheri. (Plate I. fig. 2.) 



Helminthophis guentheri, Bmileng. Ann. f Mag. N. H. (6) iv. 1889, 

 p. 361. 



Eostral one third the width of the head, extending to the level of 

 the eyes, rounded posteriorly and forming a suture with the frontal, 

 which is very broad; a single prseocular ; no subocular; eye dis- 

 tinguishable under the ocular; four upper labials,' first largest, third 

 in contact with the ocular. Diameter of body 50 times in the^ 

 total length ; tail twice as long as broad, ending in a spine. 20 

 scales round the body. Olive-brown above, head white ; yellowish 

 inferiorly, with small scattered olive spots. 



Total length 170 millim. 



Brazil. 



a. Ad. Porto Real, Prov. Rio Janeiro. M. Hardy du Drfeeuf 



[0.]. (Type.) 

 b-c. Ad. Porto Real. M. Hardy du DriSueuf 



./ ■ // • / - ''■•'. - / t«.]- 



^ 



5. HelminthopHs albirostris. 



Ehinotyphlops albirostris, Peters, Mon. Berl. Ac. 1867, p. 402. 

 Liotyphlops albirostris, Peters, 8itz. Oes. natarf. Fr. 1881, p. 6! 



Bocvurt, Miss. Sc. Mex., Rept. p. 501, pi. xxx. fig. 1 (1882). 

 Typhlops (Idiotyphlops) emunctus, Garman, N. Am. Rept. i. p. 



(1883). 



