1 1 "2. ATBACTCS. ^U7 



Snout rounded. Rostral small, once and a half an broad as deep, 

 just visible from above ; intcrnasals very small, a little broader 

 th:iu long; praefrontals as long as broad; frontal slightly broader 

 than long, as long as its distance from the end of the snout, much 

 shorter than the parietals ; loreal nearly thrice 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 148-159; 

 anal entire ; subcaudals 21-26. Pale yellowish or reddish brown 

 above, some of the scales edged with black, with numerous regular 

 black transverse spots or bars ; upper lip and lower parts uniform 

 whitish. 



Total length 335 millim. ; tail 40. 



Brazil. 



a. cf (V. 148; C. 26). Brazil? (Type.) 



6. 2 (V. 159; C. 21). Pernambuco. W.A.Forbes, Esq. [P.], 



11. Atractus major. 



Rhabdosoma nmculatum (non Giinth., 1858), Gunth. Proc. Zoo/. 



Soc. 1859, p. 411. 

 Rabdosorua badium, part., Jan, Arch. Zool. Anat. Phys. ii. 1862, 



p. 13, and Icon. Gin. 11, pi. i. fig. 1 (1866). 



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

 visible from above ; internasals very small ; praefrontals longer 

 than broad ; frontal as long as broad, or slightly longer than broad, 

 as long as its distance from the internasals or from the rostral, 

 much shorter than the parietals ; loreal twice and a half to thrice 

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

 seven upper labials, third and fourth entering the eye ; 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 163-182; anal entire ; subcaudals 30-45. Brown 

 above, with darker spots, which may be large and light-edged, 

 forming a handsome pattern ; labials yellowish, with brown sutures ; 

 yellowish beneath, dotted or spotted with brown or black. 



Total length 700 millim. ; tail 80. 



Ecuador, Bra/.il. 



a-b, c. $ (V. 174, 168 ; C. W. Ecuador. Mr. Eraser [C.j. 



4:1, 30) & V g. (V. 103; 



C. 43). 



rf. $ (V. 170; C. 31). Intac, Ecuador. Mr. Buckley TC.]. 



e. Yg. (V. 1*2; ('. ;;ti). Pallatanga, Ecuador. Mr. Buckley [C.J. 



I V. 109; C. 45). Canelos, Ecuador. Mr. Buckley [C.J. 



1 '-'. Atractus isthmicus. 



Rabdosoma zebrinum (non Jan), Bocourt, MIM. Sf. Mer., Kept. 

 p. "'50, pi. xxxiv. tip. 1 (1883). 



XL' 



