450 SNAKES OF CEYLON. 



sublinguals, but much broader than those shields ; touching 

 two scales behind. 



Sub An Ven 



Fig. 83. — ^Anal region of Bungarvis oseruleus. 



Costals : Vertebrals, rather broader than long, rather 

 broader than the ultimate row. Lateral scales, breadth 

 about three-fourths their length. Ultimate row, scales 

 about as broad as long. In 15 rows in the whole body length, 

 Few^raZs ; 195 to 225. ^wsL- Entire. Subcaudals : 31 to 56. 



(b) Anomalies — Postoculars : Rarely one. Supralabials : 

 The second is rarely divided into an upper and a lower part. 

 Infralabiah : The 3rd as well as the 4th sometimes touch 

 the posterior sublinguals. Vertebrals : Rarely some are 

 divided, and the scale rows would count 17. This does not 

 mean that there is a supernumerary row, and these parts of 

 the vertebral should not, therefore, be counted as such. 

 Rarely, however, a supernumerary row is seen above the third 

 row from the Ventrals for a variable distance along the 

 anterior part of the body, and the scale rows are genuinely 17 

 in consequence. (Fig. 84.) 



B 



Fio. 84. — Two views of maxilla of Bungarus cseruleus. 



