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S, menurusla, Blyth. 



Laicdakia and Plocederma melanura, Blyth. J. A. S., B., 

 1854, p, 737. 



Laudalda tuherculate, Gray. Cat. Rep., A. Soc. Mus. 



On the middle of the back 8 rows of enlarged keeled scales, the 

 keels forming longitudinal lines ; no enlarged scales on the back 

 of the neck, save those forming the nuchal crest. The scales of 

 the belly smooth in 53 transverse rows. The scales of the sides 

 are granular, with a minute apical spine, in transverse rows and 

 without enlarged scales among them. 17 upper and 15 lower 

 labials. Colour olive grey, speckled over with dark scales, and 

 some scales paler than the rest. Throat and below the shoulders 

 beautifully marked with greyish black. 



Length, body 37 ; tail 7-7 = 11-4. 



Inhabits the Western Himalayas, Simla, Kashmir. 



S. Dayanus, Stoliczka. 



Enlarged dorsal scales moderate, sharply keeled in about 

 13 longitudinal rows in the centre of the back, smaller, but 

 distinctly continuous on the neck up to the occiput. Nuchal 

 crest small. Numerous enlarged, almost spiny scales on the 

 sides among the smaller ones. Scales on the belly indistinctly 

 keeled, with a patch of enlarged hardened scales in the centre, 

 where the scales form 40 longitudinal rows. Pr^eanals thickened, 

 spongy in the middle, and transude a fluid. Scales of the tail 

 irregular at the base, further on, arranged in verticils. Colour, 

 in adults blackish, with indistinct darker spots on the back. 

 Head paler, body densely yellow spotted, throughout reticulated 

 with bluish. Seasonally males tinged with red and blue on the 

 fore parts. Throat blue. Beneath yellowish white. Terminal 

 two thirds of tail blackish. 



Length, body 6-00 ; tail 1200 = 1800 inches. 

 Inhabits the Western Himalayas, Hurdwar, Masuri, Kalka, 

 Simla. 



