long, covered with hexagonal, juxtaposed scales. Ventrals small, 

 equal or smaller than the last row of scales. Tail strongly 

 compressed. 



Distribution. Siak; Java; Borneo; Moluccas. 



Key to the Indo- Australian species. 



A. Rostral broken up into scales; parietals large; 



scales in 3133 rows . . I. T. anomalus p. 223. 



B. Rostral more broad than deep; parietals small, 



separated by scales; scales in 89 100 rows ... 2. T. annandalei p. 223. 



I. Thalassophis anomalus Schmidt. 



Thalassophis anomalus, Schmidt, Abh. Naturw. Hamb. II 1852, p. 8l, pi. IV. 

 Thalassophis anomalus^ Boulenger, Cat. Sn. Ill 1896, p. 269. 



Rostral broken up into small shields; internasals narrow, 

 longer than the praefrontals; latter usually in contact with 

 the second labial; frontal small, entire or divided; supraoculars 

 entire; parietals large; nasals in contact with the two anterior 

 labials; one prae- and two postoculars; temporals small; seven 

 to nine upper labials, third and fourth entering the eye, which 

 is sometimes separated by suboculars from the fourth and 

 fifth labials; two pair of chin-shields, the posterior usually 

 entirely separated. Scales with a strong tubercular keel, in 

 3 1 33 rows, juxtaposed; ventrals small, with two keels. 



Yellowish, with dark annuli, widest on the back, or with 

 black bands on the back, not reaching the belly. Length of 

 head and body 726 mm.; tail 84 mm. 



Habitat: Siak E. off Sumatra!; coast of Java (Cheribon!); 

 Borneo (Sarawak); Moluccas!. 



2. Thalassophis annandalei (Laidlaw). 



Distira annandalei^ Laidlaw, Proc. Zool. Soc. 1901 II p. 579, pi. XXXV, fig. I and 2. 

 Thalassophis annandalii, Boulenger, Fasc. Malay. Zool. I 1903, p. 16; Rept. 

 Malay Penin. 1912, p. 195. 



Rostral more broad than deep; nasals small, separated by 

 the internasals, which are large and widen in front behind 

 the rostral; praefrontals small; frontal and supraocular large; 

 one or two prae- and one or two postoculars; parietals small, 

 separated from one another and sometimes from the frontal 

 by small scales; temporals small, numerous; nine to twelve 



