298 coitrBEiD^. 



from above ; suture between the intern asals very short ; prsefrontal 

 usually single ; frontal longer than its distance from the end of the 

 snout, two thirds or three fourths the length of the parietals ; 

 loreal longer than deep ; one prse- and one postocular ; temporals 

 1+2; six upper labials, third and fourth entering the eye, first 

 ■ smallest, sixth largest ; four lower labials in contact with the ante- 

 rior chin-shields ; posterior chin-shields small. Scales in 13 rows ; 

 those on the sides of the anal and basicaudal regions obtusely keeled 

 in the male. Ventrals 150-162 ; anal divided ; subcaudals 33-42. 

 Dark brown or black above and below, with or without more or less 

 indistinct lighter longitudinal streaks above. 



Total length 510 millim. ; tail 60. 



Eastern Himalayas ; Khasi Hills ; Rangoon ? 



a, b-e. a (V. 151 ; 0. 39) & ? Nepal. B. H. Hodgson, Esq. 



(V. 160, 158; 0.36,36). [P.]. 



d-e. 2 (V. 162, 155; 0. 34, Nepal. E. India Oomp. [P.]. 



37). 

 /. c? (V. 154 ; C. 42). Sikkim. Sir J. Hooker [P.]. 



(Type of T. rugosum.) 

 g. ? (V. 160 ; C. 37). Sikkim. Messrs. v. SchlagiE- 



tweit [0.]. 

 h-k. ? (V. 161 ; C. 33) & yg. Darjeeling. T. 0. Jerdon, Esq. 



(V. 158, 159; 0.36,37). [P.]. 



I. 3 (V. 150 ; 0. 39). Darjeeling. W. T. Blanford, Esq. 



[P.l 

 m-p. S (V. 158 ; 0. 38), $ Darjeeling. Ool. Beddome [0.]. 



(V. 162; 0. 36), and yg. 

 (V. 159, 158) ; 0. 35, 39). 

 q. Hgr. 3 (V. 150 ; 0. 41). Khasi Hills. T. 0. Jerdon, Esq. 



[P.]. 



2. TracMschiuin guentheri. (Plate XIX. fig. 1.) 



Trachischium obscuro-striatum (non Blyth), Giinth. Proc. Zool. Soc, 



1860, p. 161. 

 guentheri, Bouleng. Faun. Ind., Rept. p. 285 (1890). 



Eostral as broad as deep or a little deeper than broad, visible 

 from above ; suture between the internasals very short ; prse- 

 frontal usually single ; frontal longer than its distance from the 

 end of the snout, two thirds the length of the parietals ; loreal 

 longer than deep ; one prse- and one postocular; temporals l-|-2; 

 six upper labials, third and fourth entering the eye, first smallest, 

 sixth largest ; four lower labials in contact with the anterior chin- 

 shields; posterior chin-shields small. Scales in 13 rows; male 

 with keeled scales in the anal and basicaudal regions. Ventrals 

 132-145 ; anal divided ; subcaudals 33-38. Dark brown above, 

 with indistinct lighter and darker longitudinal streaks ; yellowish 

 beneath, uniform or scantily mottled with brown. 



Total length 280 millim. ; tail 35. 



Sikkim. 



