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Show 1868.] MR. F. DAY OS NEW INDIAN FISHES. 149 teeth may be only a sexual character; but they are so similar to the differences that I observed in the skulls of the Dolphins sent from Liverpool that came from different localities, and had such a different system of coloration, that I am inclined to regard them as distinct for the purpose of attracting attention to them, and in the hope that Mr. Layard, or some naturalist in the southern hemisphere, may obtain a series of specimens, and be able to study the question in more detail. The shorter-beaked species of Clymene are chiefly known from Lagenorhynchus by the convexity of the upper surface of the beak, and of the intermaxilla above that surface. 8. O n some new or imperfectly known Fishes of India. By F R A N C I S D A Y , F.Z.S., F.L.S., & c ACANTHOPTERYGII. BERYCIDAE. RlIYNCHICHTHYS ORNATUS, Sp. 110V. D. 12/43. P.15. V. 1/6. A. 4/9. C. 15. L. 1. 36. L.tr.3|/6. Length of specimen 1 ^ inch. Length of head 3, of pectoral ^, of base of dorsal spines 5, of base of dorsal rays y1^, of base of anal \, of caudal \ of the total length. Height of head \, of body g, of dorsal spines \, of dorsal rays \, of ventral \, of anal spines \, of anal rays T L of the total length. Eyes. Large, circular, diameter §• of length of head, rather above \ a diameter from end of snout, nearly 1 diameter apart. Appearance percoid ; the dorsal profile much more convex than the abdominal, which is nearly horizontal from the lower surface of the snout to the inferior margin of the caudal fin. Mouth below, posterior to the produced and pointed snout. The posterior extremity of the maxilla extends to beneath the centre of the orbit; it is hidden by the praeorbital. Prseoperculum, its vertical limb with fine but distantly placed serrations ; a large and strong spine extends from its angle to the base of the pectoral fin ; its horizontal limb strongly denticulated, as is also the lower margin of the interoperculum. Operculum with two spines, the upper the largest, its lower margin denticulated. Prseorbital and shoulder-bones serrated. The upper surface of the head roughened by raised longitudinal ridges. Teeth. Villiform in jaws, vomer, and palatines. Fins. Dorsal fins connected ; spines moderately strong, the second the longest, whence they decrease to the last; interspinous membrane deeply cleft. Pectoral rounded. Ventral arises a little distance posterior to the pectoral, its spine being equal to the second of the dorsal fin in length. Third anal spine longest and strongest, the first very minute. Caudal slightly lobed. |