306 COLTJBRID^. 



its distance from the end of the snout, much shorter than the 

 parietals ; loreal twice as long as deep ; two postoculars : temporals 

 1+2 (or 2 + 2) ; seven upper labials, third and fourth entering the 

 eye ; four (or three) lower labials in contact with the single pair of 

 chin-shields, which are moderately large and separated from the 

 symphysial. Scales in 17 rows. Ventrals 143-158 ; anal entire ; 

 subcaudals 19-33. Pale yellowish brown or orange above, with or 

 without dark edges to the scales ; uniform whitish beneath. 



Total length 330 miUim. ; tail 45. 



Brazil ; Venezuela. 



A. A broad black vertebral stripe and a black line along each side, 

 replaced by a series of spots on the anterior part of the body. 



a. c? (V. 143 ; C. 30). Caunavieras, south Dr. Wucherer [C.]. 



ofBahia. (Type.) 



B. Two or four longitudinal series of black, light-edged, alternating 



spots or narrow cross bars. 



b, c. <i (V. 152; C. 19) Rio Janeiro. A. Fry, Esq. [P.]. 

 &hsr. (V. 158;C. 21). 



d, e. Yg. (V. 145, 143 ; C. Brazil ? G. Lennox Conyngham, 



26, 27). Esq. [P.]. 



9. Atractus bocourti. 



Rabdosoma maculatum, part., Bocourt, Miss. Sc. Me.r., Repf. p. 540, 

 pi. xxxv. tig. 1 (1883). 



Snout obtuse. Rostral small, nearly as deep as broad, just 

 visible from above ; internasals very small ; prsefrontals slightly 

 broader than long ; frontal a little broader than long, as long as its 

 distance from the rostral, much shorter than the parietals ; loreal 

 twice and a half as long as deep ; two postoculars ; temporals 1 +2 ; 

 seven upper labials, third and fourth entering the eye ; four lower 

 labials in contact with the single pair of chin-shields, which are 

 moderately large and separated from the symphysial. Scales in 

 17 rows. Ventrals 175-191 ; anal entire ; subcaudals 25-39. 

 Pale brown above, with five longitudinal scries of small black spots ; 

 a black streak on each side of the head, passing through the eye, 

 another along the nape, and a fifth along the tail ; yellowish 

 beneath, with some irregular black blotches and on each side a 

 series of partly confluent small spots or short streaks, forming two 

 lines along the belly. 



Total length 390 miUim. ; tail 40. 



Northern Peru, Ecuador. 



a. 2 (V. 175 ; C. 25). Acomayo, N. Peru. Messrs. Veitch [P.]. 



10. Atractus maculatus. (Plate XIV. fig. 3.) 



Isoscelis maculata, Giinth. Cat. p. 204 (1858). 



Rbabdosoma maculatum, part., Giinth. I. c. p. 241. 



Rabdosoma zebrinum, Jan, Arch. Zonl. Anat. Phys. ii. 1862, p. 15. 



