( 224 ) 



T. Andersoni, Theob. Catalogue of Rep., A. S. B., p. 75. 

 T. obscurus, Theob. ib., p. 76. 



Accepting the correctness of Stoliczka's remarks (J. A. S. B,, 

 1871, part II, p. 443) this species is equally variable with the 

 last, as regards the subdivision of the second upper labial, 

 which is undivided in Andersoni (type), but divided in ohscurus. 

 Supranasals separated by a shield behind the rostral. Scales in 

 25 rows, sharply keeled. Eye rather large, with two rows of 

 scales below the orbit. Ventral 182. Subcaudals 71. Anal 

 entire, strongly projecting. Colour above and below uniform 

 rich brown. Belly and sides conspicuously white spotted, or 

 greenish on the sides and belly, spotted and barred with brown. 



Inhabits the Andaman Islands. 



Stoliczka (1. c.) ridicules the identification of this species with 

 monticola by Dr. Anderson (P. Z. S., 1871, p. 194), but points 

 out its close relationship to porphyraceuus. More materials are 

 however required to settle the question of identity, though it 

 seems certain it has nothing to do with monticola. 



T. strigatus, Gray. Zool. Mis., p. 48. 



Trig. Nilghiriensis, Jerd. J. A. S. B., 1854, p. 524. 



Superciliaries narrow. No shields behind the rostral, but the 

 surface of the head covered with small nearly smooth scales. 

 Scales in 21 rows. Ventrals 136—142. Caudals 31—40. Colour 

 brown, with a row of large irregular darker spots and a horse- 

 shoe-like white mark on the neck. Lips yellowish. A triangular 

 black spot below the eye and pit. A brown band from the eye 

 to the neck. Mandible black spotted. Belly marbled with black. 

 Tail tip white in the young. 



Grows to 20 inches. (Tail 2-50.) 



Inhabits the Dekkan and Nilghiri Hills. 



c. Species inadequately known. 



T. mucrosquamatus, Cantor. P. Z. S., 1839, p. 32. 



Ventrals 218. Subcaudals 91. Brownish grey above, with 

 black white-edged rings, covered with oval half-keeled pointed 

 imbricate scales ; whitish beneath, dotted with black. 



Inhabits the Naga Hills, Assam. 



