( 172 ) 



Grows to 60 inches. (One of 36 inches had a tail of 8.) 

 Inhabits Afghanistan (Giinther), Synd and the North-West of 

 India. 



Zaoccts, Cope. 



Form elongate, compressed. Head distinct from neck. Eye 

 large. Pupil round. Two prseoculars. Two postoculars. Scales 

 in 14 or 16 rows. The median rows keeled. 



Z. nigromarginatus, Blyth. 



Coryphodon dhumnades apud Jan. et Sor., No. 24, pi. 4. 



Loreal longer than high. 8 upper labials, the fourth and fifth 

 entering the orbit. Scales elongate, acutely pointed, in 16 rows, 

 the four middle rows keeled. Anal bifid. Colour green above, 

 paler below. Two broad deep black bands commenciag one- 

 third from the head and running on either side to end of tail. 

 The upper bands are separated by the two half scales of the 

 median row. 



Grows to 96 inches. (Tail 27.) 



Inhabits Nipal, Sikkim and the Khasi hiUs. 



Herpetoeeas, Ounther. 



Form compressed. Head elongate, rounded before, flat above. 

 Eye moderate. Pupil round. Nasals two. One prseocular. 

 Two postoculars. Scales slightly keeled in 19 rows. Ventrals 

 strongly bent up at the sides. Anal bifid. 



H. Sieboldii, Giinther. 

 Rostral broader than high and rounded superiorly. The prse- 

 frontals pentagonal and one-half (or rather more) as large as 

 postfrontals, which are bent down at the side. Nostril between 

 two largish nasals. One loreal, smaller than a nasal. Prseocular 

 one, large, but does not touch the vertical, and with a minute 

 shield beneath it in some specimens detached from the third 

 labial. Postoculars two, small. 8 upper labials, the third, fourth 

 and fifth (or sometimes the fourth and fifth only) enter the orbit. 

 Scales in 19 rows slightly keeled on the back. Anal bifid. Colour 

 uniform greenish brown, below yellowish, or with a black band 



