Of Lizards, the common Calotes versicolor, a small and young Riopa, and a beautiful new Gecko cogeneric, with that described from the mountainous interior of the Tenasserim Provinces, in J. A. S. XXVIII, 279.
Naultinus (?) fasciolatus, nobis, n. s. Tail proportionally longer and more slender than in N. (?) variegatus, nobis, l. c.; but the larger of two specimens evidently not full-grown. Head very similar to that of the other; but the dark band behind the eye bending abruptly to meet its opposite on the occiput; this is followed by 23 other blackish cross-bands, continued to the end of the tail, those of the body being edged and set off posteriorly with whitish; a series of broad sub-haxagonal plates in both species beginning near the vent, and continued to the end of the tail underneath. Abdominal scales proportionally smaller than in the other, and no group of conspicuously larger scales anterior to the vent. The sub-caudal scales are also much smaller than in the other. Larger specimen 4⅞ in., of which tail 2¾ in. Both species are remarkable for the beauty of their markings.
Of Snakes, Coronella Russellii, (Daud.), Coluber mucosus, (L.), Dipsas trigonata, Schlegel, Vipera Russellii, (Shaw), and two species which appear to be new :—
Dipsas multifasciata, nobis, n. s. Form typical; the muzzle shorter and rounder than in D. trigonata: the same whitish spots along the ridge of the back as in that species, but somewhat indistinctly defined; and narrow black transverse bands on the sides, numbering as many as 72 from neck to vent, beyond which they are broken into spots: throat dull white; the abdominal surface densely speckled throughout with triangular black spots, which are more or less continued into lines. Length of specimen (evidently young) 14½ in., of which tail 3 in.
For the other I must constitute a genus :—
Platyceps, n. g. Like Coluber (Corythodon, D. B.), but with exceedingly flat head, and tail only about a sixth of the total length.
Pl. semifasciatus, nobis, n. s. Colour olive-grey above, white below; the posterior two-fifths without markings, and the nuchal region marked with broad transverse black bands, having lateral black spots alternating on either side. These gradually become
