48 



T. BOTHRIORHYNCHUS; QunthcT. 



Scales 24. Diameter j^^. Four sutural grooves in the 

 lower part of the snout. Uniform brownish olive. 

 Penang. 



T. STRIOLATUS, FctCTS. 



Scales 24. Each scale with a yellow, posteriorly black- 

 edored, cross-streak. 



Bengal. 



T. siAMENSis, Gthr. 



Scales 22. Diameter ^\. Greyish olive, yellowish below. 



T. BRAMINUS, Daudin. 



Scales 20. Diameter -f%. Fronto-nasal not in contact 

 with labials. Brown, paler below. 



T. PAMMECES, Gthr. Plate YIT, fig. 2. 

 Similar to the preceding. Diameter y^g-. 

 Madras. 



T. MiRUS, Jan. 



Scales 18. Diameter j\-. A subocular present. Bro,wn 

 with 3^ellow snout. 



Ceylon. 



ONYCHOCEPHALUS, D. and B. 

 Nostril inferior. Rostral with an anterior trenchant edge. 



0. ACUTUS, D. and B. 



Scales 28-29. Longitudinal rows, 500. Diameter ^\f. 

 Light bronze, each dorsal scale has a pale centre ; 

 yellowish below. 



South of India. 



