Coluhrine Snake from S.E, Brazil. 



229 



SordeUina brandon-jonesii^ sp. n. 



Rostral about twice as broad as deep, scarcely visible 

 from above ; nostril in a semidivided nasal^ the cleft running 

 from the first labial to behind the nostril, making the 

 posterior part o£ the shield look like an anterior loreal, 

 unless examined with care ; internasals triangular, shorter 

 than the pncfrontals, which are much broader than 

 long ; frontal slightly longer than broad, about twice the 

 width of a supraocular, but longer than its distance from 

 tip of snout, much shorter than the parietals, which are 

 large ; loreal small, as deep as or deeper than long ; one 

 prDe- and two postoculars, the upper much the larger ; 

 temporals 1+2, the anterior about twice as long as deep, 

 the upper posterior broken up on the right side of each 

 specimen, and reaching beyond the parietals on the left ; 



Ficr. 2. 



«. Upper view of head ; b. Lower view ; c. Side view, Nat, size. 



eight upper labials, 3rd, 4th, and 5th entering the eye, or 

 seven, 8rd and 4th entering the eye (3rd and 4th fused in this 

 case) ; four lower labials in contact with anterior chin-shields, 

 which are about half as long as the posterior. Scales in seven- 

 teen rows throughout entire length of body ; ventrals 150, 

 148; anal divided ; snbcaudals 43 (tip of tail damaged), 53, 

 in two rows ; tail ending in a conical sharply pointed scale. 

 Length of tail about one-sixth total length. Total length 

 of specimens 528 mm. and 314 mm.; tail 87 mm. (tip 

 damaged) and 62 nmi. 



Coloration. Chocolate-brown above and beneath ; shield 

 and scale edges sometimes lighter; a cream-coloured narrow 

 streak through upper labials, broadening into a blotch on 

 each side of neck, and then continuino- as a narrow broken 



