23 Dr. A. Giinther on new Species of Snakes 



the head, trunk, and tail ; they do not extend downwards on the 

 sides of the trunk ; each occupies two cross series of scales, and 

 is as broad as the interspaces of the ground-colour; the first 

 occupies the end of the snout, the second covers the interocular 

 and occipital regions, and is separated from the third by a narrow 

 white collar. 



This snake has the physiognomy of a Rhinostoma ; its rostral 

 shield is produced, with a sharp anterior edge, a convex upper 

 and a slightly concave lower surface ; its posterior angle extends 

 far between the prefrontals, without entirely separating them ; 

 prsefrontals rather smaller than postfrontals. Vertical five- 

 sided, as broad as long ; occipitals not much longer than vertical. 

 Nasal shield single, elongate, replacing the loreal ; the single 

 prseorbital extends nearly to the vertical ; two small postorbitals 

 in contact with the anterior temporal ; temporals three, the two 

 posterior scale-like; five upper labials, the third and fourth 

 entering the orbit, the last sometimes separated into two ; seven 

 lower labials ; chin-shields very small, scale-like. Ventral plates 

 148, anal 1/1, subcaudals 22-24. 



Head 5 lines. 



Trunk 132 „ 



Tail 15 „ 



Total length 13 inches. 



Two specimens from Baranquilla (New Granada) are in the 

 British Museum. 



Dryophis Kirtlandii. 

 Hallowell, Proc. Ac. Nat. Sc. Philad. vii. 1854, p. 100. 



Rostral angular in front, slightly reverted on the upper side 

 of the head ; anterior frontals not much smaller than posterior ; 

 occipitals rather longer than the vertical, obtusely rounded be- 

 hind, and with a pair of large nuchal scales, which are larger 

 than the hinder temporal. Nasal single, oblong, pierced on the 

 middle by the round nostril ; loreal single, very long ; one ante- 

 orbital, reaching the upper surface of the head, but not ex- 

 tending on to the vertical. The anteorbital region deeply con- 

 cave. Three postorbitals ; four temporals, the anterior of which 

 is in contact with the postorbitals. Eight upper labials, the 

 fourth and fifth entering the orbit ; ten pairs of lower labials, 

 six of which are in contact with the chin-shields. Scales (in 

 nineteen series) very narrow, long, imbricate, disposed in cross 

 series, with a single groove at the apex, those of the vertebral 

 series slightly grooved, not larger than the others. 



Uniform olive-green above, yellowish on the lower parts of 

 the sides and on the belly. 



