TEACHISCHIUM. 285 



Synoptis of the Safeties. 



A. Scales iu 13 rows, those of the ischiadic region 



keeled in the males. 



a. Prsefrontal shield usually undivided ; one 



postocular ; 150 ventrals or more T. fuscum, p. 285. 



b. Praefrontal shield usually undivided ; one 



postocular : 134-145 ventrals T. yuentheri, p. 285. 



c. Two prsef rentals ; two postoculars T. temdceps, p. 286. 



B. Scales in 15 rows, all smooth. 



a. Sixth upper labial largest T. monticola, p. 286. 



b. Last three upper labials sub equal T. rubriventer, p. 286. 



336. Tracb.iscb.ium fuscum. 



Calaiuaria fusca andC. obscuro-striata, Blyth, J. A.'S. B. xxiii, 1854, 



p. 288. 



Trachischiuin rugosuui, Giinth. Cat. Col. Sn. p. 30. 

 Trachischium fuscum, Gunth. P. Z. S. 1860, p. 161 ; Theob. Cat. 



Kept. As. Soc. Mus. 1868, p. 45 ; Anders. P. Z. S. 1871, p. 171 ; 



Theob. Cat. p. 144. 

 Ablabes fuscus, Giinth. Sept. B. I. p. 225. 



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

 from above ; suture between the interuasals very short ; praefrontal 

 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 ; 6 upper labials, third and fourth entering the eye, first 

 smallest, sixth largest ; 4 lower labials in contact with the anterior 

 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 20 inches ; tail 2-5. 



Hal). Eastern Himalayas (3000-7000 feet), very common in Sik- 

 hirn ; Khasi Hills ; Rangoon ? (Blytli). 



337. Trachischium guentheri. 



Trachischium obscurostriatum (non Blyth}, Giinth. P. Z. S. 1860, 

 p. 161. 



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

 from above ; suture between the internasals A'ery short ; prae- 

 froutal 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 1 + 2 ; 

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

 sixth largest; 4 lower labials in contact with the anterior chin- 

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



