132 



SNAKES OF CEYLON. 



Lepidosis. — {a) Typical — Rostral: Nearly twice as broad 

 as high, in contact with six shields ; the rostro-nasal sutures 

 longest (Fig. 30). Internasals: Two; the suture between them 



TTT XLTS 



. "sr /Ytt 



Fig. 30. — Macropisthodou plumbicolor (life size). 



two-thirds to subequal to that between the praefrontals ; three- 

 fourthsto subequal to the internaso-prsefrontals. Prsefrontals : 

 Two ; the suture between them subequal to, or rather less than 

 the praefronto-frontals ; in contact ^^ith internasal, postnasal, 

 loreal, prseocular, and supraocular. Frontal : Touches six 



