DESCRIPTION OF A NEW SNAKE BELONGING TO THE GENUS HOP LOCEPH ALUS. By J. Douglas Ogilby, F.L.S. HOPLOCEPHALUS FRONTALIS, Sp.nov. Scales in nineteen rows ; abdominal plates 154 ; anal plate undivided ; sub-caudal plates 30. Body elongate and rounded, tail short, terminating in a strong spinate scale ; head small, but little distinct from the trunk ; muzzle short, broad, and rounded ; eye small, the pupil sub-elliptical. Rostral shield twice as broad as high, rounded above, and slightly bent backward between the anterior frontals, which are of moderate size and broader than long; posterior frontals much larger, as broad as long, obtusely angulate posteriorly, and hent downwards on the side of the head so much so as to form a broad suitor e with the second iq^per labial ; nasal shield triangular, small ; vertical hexagonal, rather longer than broad, with the outer margins slightly convergent behind, the anterior angle very obtuse, and the posterior rounded ; supra ciliary large ; occipitals large, rounded posteriorly ; one anterior ocular, just reaching to the upper surface of the bead; two posterior oculars, the lower of which is the larger ; temporal shields in two series, the lower shield of the anterior series in contact with both post-oculars ; six upper labials, the third and fourth bordering the eye ; mental shield acutely angulated posteriorly ; anterior chin shields rather larger than the posterior; many small scales between the chin shields and the first abdominal plate. Four small teeth behind the poison-fang. Light brown above each of the scales narrowly margined with black, so as to give the appearance of network ; a broad black nuchal collar, extending forwards over portions of the upper labials, temporals, and the lower posterior ocular to the eye ; a black spot in front of the eye on the upper
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