10. AKCISTRODON. 527 



and a pair of prsefrontals ; upper prseooular separated from the 

 posterior nasal by a loreal; two postooulars, upper small, lower 

 descending to below the eye, which it sometimes entirely separates 

 from the labials ; 5 to 7 upper labials, none entering the loreal 

 pit, the penultimate and last very large, formed by fusion with the 

 lower temporals. Scales sharply keeled, in 21 (rarely 23) rows. 

 Ventrals 144-166 ; anal entire ; subcaudals 35-51 pairs. Brown 

 with black spots or transverse bands ; sometimes with a light ver- 

 tebral band with dark festooned borders ; a black, light-edged band 

 from the eye to the angle of the mouth ; lower parts dark brown, 

 or variegated with black and white. 



Total length 590 millim. ; tail 90. 



Himalayas, 5000 to 10,000 feet ; Khasi hills. 



a. cJ (V. 162 ; C. 43). Qarwal, W. Himalayas. Dr. Cantor. 



b. S (V- 166 ; C. 50). Garwal, W. Himalayas. Messrs. v. Schla- 



gintweit [0.]. 

 c-l. cj (V. 153, 153, Himalayas. T.O. Jerdon,Esq. 



144 ; 0. 44, 47, 47), [P.]. 



2 (V. 157; C. 35), 



& yg. (V. 158, 153, 



159, 160, 155; C. 



40, 46, 39, 40, 47). 

 m-o. ' (J (V. 153 ; 0. Khasi hills. T.C. Jerdon,Es(i.[P.]. 



47), 5 (V. 158; 0. 



36), &hgr. (V. 159; 



C. 39). 



9. Ancistrodon rhodostoma. 



Rvssell, Ind. Serp. ii. pi. xxi. (1801). 



Trigonocephalus rhodostoma, Boie, Ids, 1827, p. 561 ; Schleg. Phys. 



Serp. ii. p. 547, pi. xx. figs. 1-3 (1837), and Abbild. p. 140, pi. xlix. 



(1844) ; Gray, Cat. p. 15 (1849) ; Jan, Icon. Gen. 46, pi. vi. fig. 2 



(1874). 

 Leiolepis rhodostoma, Dztm. §• Bibr. vii. p. 1500 (1854). 

 Tisiphone rhodostoma, Peters, Mon. Berl. Ac. 1862, p. 673. 

 Oalloselasma rhodostoma, Gilnth. Kept. Brit. Ind. p. 391 (1864). 

 Ancistrodon rhodostoma, Boettg. Ber. Offenb. Ver. Nat. 1892, p. 135. 



Snout pointed, somewhat turned up at the end. Eostral as deep 

 as broad, or a little deeper than broad ; a pair of internasals and a 

 pair of prsefrontals ; frontal as long as or a little longer than its 

 distance from the end of the snout, as long as or a little shorter 

 than the parietals ; upper prseocular separated from the posterior 

 nasal by a loreal ; one or two postoculars and one subocular, 

 separating the eye from the labials ; loreal pit separated from the 

 labials ; 7 to 9 upper labials. Scales smooth, in 21 rows. Ventrals 

 138-157 ; anal entire ; subcaudals 34-54 pairs. Eeddish, greyish, 

 or pale brown above, with large angular, dark brown, black-edged 

 spots disposed in opposite pairs or alternating ; a dark brown ver- 

 tebral line ; lips yellowish or pink, powdered with brown ; a broad 

 dark brown, black-edged band, festooned below, from the eye to the 



