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 



TTY YL YS 



"WOT 



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



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

 fourths to sube qual to the internaso -prefrontals. Prefrontals : 

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

 the prsefron to -f rontals ; in contact with internasal, postnasal,, 

 loreal, prseocular, and supraocular. Frontal : Touches 



six 



