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P. monticola, Cantor, (not of Blyth.) 



Scales smooth, in 15 rows. Vertebrals enlarged. Anal entire. 

 Prsefrontals twice as broad as long, half the size of postfrontals, 

 which enter the orbit. Nasal simple. Loreal replaced by a large 

 prseorbital, with a second small one below wedged between the 

 orbit and the third labial. Two very narrow postorbitals, the 

 lower excluding the fifth labial from the orbit. 7 upper labials, 

 the fourth entering; the orbit. Colour brown. A black streak 

 from the brow, forming a ring behind the occiput, and conti- 

 nued as a black band on either side of the neck. Along the 

 anterior part of body a row of oblique black Y-shaped cross 

 bands, obsolete after the middle of the body. Below yellowish, 

 dotted with brown. 



Grows to 24 inches. (Tail 5"5.) 



Inhabits Assam. 



A rare snake. The type is in the Oxford Museum. 



P. lasvis, Kuhl. 



Scales smooth in 15 rows. The vertebrals slightly larger. Anal 

 entire, Prsefrontals twice as broad as long, half the size of the 

 postfrontals which enter the orbit. Nostril wide, in the poste- 

 rior part of a shield. Loreal replaced by the single prteocular. 

 7 or 8 upper labials, the third and fourth entering the orbit. The 

 last two very low. Colour brown, marbled with black in 

 irregular cross bands. Belly brown, or white with irregular 

 blackish lateral spots. 



Grows to 16 inches. (Tail 3.) 



Inhabits the Khasi Hills, Kocliin China and Java. 



P. margaritophorus, Jan. 

 P. Berdmorei, Blyth. 

 P. macularius, Blyth. (the young). 

 Aplopeltura boa Schl. apud Blyth. (the adult). 

 Scales smooth in 15 rows, or slightly keeled on the back. 

 Head high, quadrate, blunt, pugnosed. Eye large. Supercili- 

 aries large, fully as large as a postfrontal. Rostral high, but not 

 reaching the top of the head, deeply excavated below. Prse and 



