PHYLLOPHIS CARINATA. 295 



GONYOSOMA FR^XATUM. 



Herpetodryas frenatus, Gray, Ann. ^ Mag. Nat. Hist. 1853, p. 390. 

 Gonyosoma frenatum, Giinth. Colubr. Snakes, p. 123. 



Scales nearly smooth, only those of the dorsal series with faint keels, not elongate, in nine- 

 teen rows. Rostral shield much broader than high, flat ; anterior frontals subquadrangular, 

 rounded and narrow in front, rather bi'oader than long, not quite half as large as posterior ; 

 posterior frontal bent downwards on the sides, in contact with the second and third labials ; 

 vertical of moderate size, with a right angle behind; occipitals rounded behind. Nostril 

 between two nasals; loreal none, confluent with posterior frontal. One praeocular, large, 

 extending on to the upper surface of the head, but not reaching the vertical. Two postoculars. 

 Nine low upper labials, the fourth, fifth, and sixth entering the orbit. Temporals irregular : 

 two in front are elongate and in contact with the postoculars. Ventral shields keeled, the 

 outer portion bent up the sides, 203 ; anal bifid; subcaudals 120. Maxillary teeth equal in 

 length, the anterior being rather more feeble than the posterior. Entirely grass-green, paler 

 below; ventral keel whitish. A black band runs from the loreal region through the eye to 

 the angle of the mouth. 



The only specimen known is fi-om Khasya ; it is 27^ inches long, the tail measuring 

 7^ inches. 



PHYLLOPHIS, Gf/ir. 



Body and tail moderately elongate, strongly compressed, with more than 

 200 keeled ventral shields. Snout not depressed, of moderate length ; 

 supraciliary rather prominent ; head distinct from neck ; eye of moderate 

 size, with round pupil. Shields of the head regular : two anterior and two 

 posterior oculars ; one nasal. Scales not much elongate, keeled, in twenty- 

 three rows. Anal bifid. Teeth subequal in size, none grooved. 



Only one species. 



PHYLLOPHIS CARINATA. (Plate XXI. fig. B.) 



Eostral shield not quite as high as broad ; anterior frontals subtruncated in front, more 

 than half as large as posterior ; posterior frontals rather broader than long, bent downwards 

 on the sides ; vertical five-sided, two-thirds as broad as long; supraciliaries not much smaller 

 than vertical ; occipitals rounded behind. Nostril round, open, in an undivided shield ; 

 loreal longer than high ; two praeoculars, the upper of which is the larger, and extending on to 

 the upper surface of the head, but not touching the vertical ; the lower is small, intercalated 

 between the third and fourth labials. Two postoculars; temporals rather irregularly 

 arranged, 2 + 2 + 3, the two anterior being the largest and in contact with the postoculars. 



