420 ADDENDA AND COKEIflENDA. 



the prsefrontals ; frontal hexagonal, once and two thirds as long as 

 broad, much longer than its distance from the end of the snout, as 

 long as the parietals ; loreal nearly as deep as long ; one prae- and 

 two postoculars ; temporals 1 + 2 ; six upper labials, third and 

 fourth entering the ej'e, fifth very large ; anterior chin-shields 

 a little longer than the posterior, in contact with the symphysial 

 and three lower labials. Scales in 15 rows. Ventrals]22; anal 

 entire ; subcaudals 24. Dark purplish brown above, some of the 

 scales edged with black ; a black arrow-headed marking on the 

 nape, the apex on the parietals ; labials yellowish, with black 

 sutures ; belly yellowish, with large black spots. 



Total length 340 mUlim. ; tail 40. 



Mountains of Burma. 



a. ? (V. 122 ; 0. 24). Toungyi, S. Shan States. E. W. Gates, Esq. 



[P.]. 



