Dec. 1915. ON REPTILES AND BATRACHIANS FROM 245 
THE COAST AND ISLANDS OF SOUTH-EAST SIAM. 
the tail, pinkish mottled with dark grey. Throat white, iris and 
tongue, dark brown. 
The young individual referred to from Hup Bon, was, as is fre- 
quent with many snakes, much more vividly coloured than the adult, 
with strongly marked cross-bars anda broad black chevron upon the 
nape, pointing forwards. 
25. TROPIDONOTUS SUBMINIATUS, Schleg. 
Amphiesma subminiatum, Mocqnard, Les Reptiles de L’Indo-Chine, p. 
47, (1907). 
Natrle subminiata, Barbour, Memoirs M.C,Z., Nov. 1912, XLIV, 
Wo, Fop.111 
Tropidonotus subminiatus, Smith, Journ. Nat. Hist. Soe. Siam, I, p. 15 
(1914). 
Two specimens from Ok Yam; apparently common everywhere 
in Siam. 
26. COLUBER RADIATUS, Cantor. 
Blgr, Fascic. Malay. Zool., I, p. 163 (1903); Smith, Journ. Nat. Hist. 
Soc Siam, I, p. 95 (1914); Wall, Journ. Bombay N.H.S., XXIII, 
p. 206 (1915) 
One specimen was taken on Koh Chang; it appears to be a 
common snake in most parts of the country. 
27. SIMOTES cycLuRvS, Cantor. 
Mocquard, Les Reptiles de ’Indo-Chine, p. 46 (1907); Smith, Journ. 
Nat. Hist. Soc. Siam, p. 97 (1914); 
Two specimens from Koh Chang and Klong Yai: a very com- 
mon snake in Siam. ‘To thisform which has 21 rows of scales and no 
longitudinal streaks the names of fusciolatus and cochinchinensis have 
been attached, 
28. SimoreEs 1norNatus, Bler. 
Boulenger, Journ. Nat Hist Soc. Siam, Vol. 1, p. 68 (1914). 
One example from Koh Kut, an anomalous individual with the 
Ath and 5th upper labials fused, As it appears to differ somewhat in 
other respects from the two specimens already known, we givea 
description of it here. 
Nasal divided, portion of rostral seen from above as long as 
its distance from the frontal ; suture between the internasals about 
one-third that between the prae-frontals: frontal one and one-third 
longer than broad, nearly one-fourth longer than its distance from end 
