178 P H I D I A. 



Loc. — A specimen of this species was collected at Singapore. 



Plate X, fig. 1, represents DoliopMs flaviceps, size of life. 



Fig. 2, is a side view of the head. 



Fig. 3, an upper view ; and, 



Fig. 4, an under view of the same region. 



Fig. 6, exhibits the vent and adjoining scutellae. 



PSEUDELAPS PSAMMOPHIS, Grd. 



Spec. Char. — Body slender and elongated ; tail tapering into a point. 

 Scales smooth, disposed upon fifteen longitudinal series. Color blu- 

 ish or greenish ; unicolor above, and an obscure black band along 

 the middle of the abdomen. A transverse black fillet upon the 

 rostrum, and a black patch beneath the eye. 



Syn.— ^/a^.5 psammophis, ScHL. Ess. Phys. Serp. 1837, 455 ; &, Abbild. Amph. 

 1837, 137, PI. XLvi, fig. 14, 

 Fseudelaps psammophidius, DuM. & Bibr. Erpet. gen. VII, ii, 1854, 1234. 



Descr. — The head is slender, subovoid in general appearance, and 

 passing gradually to the neck without any apparent contraction ; its 

 upper surfiice is flattened ; the frontal region sloping forwards, and, 

 since the sides are nearly vertical, it assumes an obscure subtetragonal 

 aspect. The snout is bluntly rounded, and protrudes slightly beyond 

 the lower jaw. The mouth is deeply cleft, and nearly rectilinear. The 

 eye and pupil are large and subcircular. The nostril is large, and placed 

 between two plates. The occipital plates are very large ; the vertex 

 plate is very much elongated, and sublanceolated in shape, being 

 slightly concave laterally. The postfrontal plates are much larger 

 than the prefrontals, extending somewhat to the sides; the prefrontals 

 are broader than long, subtriangular or polygonal in shape. The 

 rostral plate is pyramidal, extending somewhat to the upper surface of 

 the head, and very concave upon its base. The prenasal is a vertically 

 elevated plate, whilst the postnasal is horizontally elongated. There 

 is no loral plate. The postnasal is contiguous to the anteorbital, which 

 is well developed, subtrapezoid, oblique in position, and extending 



