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Show 1870.] SURGEON F. D A Y O N INDIAN FISHES. 371 This fish is very similar to the L. thermalis ; but in this the dorsal fin, consisting of 8 rays, is opposite to the ventrals, in the latter it is in advance of them. Colours. Body dotted with rows of black spots ; a black ocellus at the upper margin of the base of the caudal fin; six to eight rows of black spots along the dorsal fin, and about ten more broken-up lines of spots on the caudal, which is cut nearly square. The suborbital spine becomes minute in this species when adult. Hab. Wynaad. NEMACHEILUS SINUATUS, sp. nov. B.iii. D.8f9. P. 12. V. 8. A. 2/5. C. 18. Length of head ± of caudal |, height of body | of the total length. Eyes situated in the middle of the length of the head, 2 diameters from end of snout, 1| diameter apart. Barbels long and thin. Scales distinct. Lateral line ceases opposite the end of the dorsal fin. Fins. Dorsal arises slightly in advance of the ventrals, and midway between the snout and the base of the caudal, which last is cut square, but some of the outer rays are rather shortened. Colours. Body olive, with irregular vertical brown bands, having shorter intermediate ones. A black ocellus exists at the base of the upper portion of the caudal fin. Dorsal yellow, with three or four rows of black spots. Caudal orange, with four sinuous black >-shaped bars with an inverted centre. Hab. Wynaad. LABEO NIGRESCENS, sp. nov. B.iii. D. 2/14. P.15. V. 9. A. 2/5. C. 21. L. 1. 36. L. tr. 6/7. Length of head {-, oi caudal l height of body f of the total length. Eyes. Diameter i of length of head, 2 diameters from the end of snout. Snout rather swollen, rounded, and somewhat projecting over the lower jaw; a small lateral lobe; glands over the whole of the snout. A very distinct labial fold both above and below, a deep transverse groove across the chin; lower lip deeply fringed. The rostral barbels reach to beneath the anterior margin of the orbit the maxillary to below its posterior third. Fins. Upper margin of dorsal fin straight; the pectoral extends to the ventral, which latter fin reaches the anal. Anal rather elongated anteriorly, and if laid backwards it reaches the base of the caudal, which latter fin is deeply forked. Scales. Four and a half rows between the lateral line and the base of the ventral fin. Colours. Deep brown, each scale with a black spot at its base. Fins black. Hab. Mangalore. |