OCR Text |
Show 706 SURGEON F. DAY ON THE [Dec. 5, one third to one half more than that of the base of the first dorsal. Pectoral spine as long as the head without the snout, and armed internally with about fifteen strong teeth. Air-vessel large, heart-shaped, divided internally into two lateral cavities by a fibrous partition, which, however, possesses a large oval opening anteriorly, thus permitting a free communication between the two chambers. The species is fully described in the ' Catalogue of Fishes of the British Museum' (vol. v. p. 81) under the name oi Macrones tengara. MACRONES TENGARA, H. B. pl. 3. f. 61. D. \\o. P.\. V. 6. A.f. C. 19. Length of head \, of caudal \, height of body £ of the total length. Eyes. Diameter f of length of head, 1| diameter from end of snout and apart. Groove on the summit of the head extends to the base of the occipital process, which latter is roughened in lines, and about two fifths as wide as long. Nasal barbels half as long as the head, the maxillary reach the base of the caudal fin, the external mandibular the middle of the pectoral, whilst the internal are shorter. Fins. Dorsal spine weak, nearly half as long as the head, and smooth on both edges; adipose fin (as is well shown in the figure) commences just behind the base of the first dorsal, as which it is nearly three times as long. Pectoral spine as long as the head to the middle of the eye; it has about ten moderate-sized teeth internally, and is finely serrated externally. Caudal lobed, the upper the longer. Colours. Brownish yellow, with three longitudinal broad brown bands, and a black blotch ou the shoulder. MACRONES VITTATUS, Bl. Bagrus oculatus, Cuv. et Val. Bagrus montanus &c, Jerdon. Macrones armatus, Day. Hab. Madras Presidency, Mysore, and the western coast of India. MACRONES GULIO, H. B. pl. 23. f. 66. Air-vessel large, heart-shaped, having a longitudinal septum internally, which has a connecting opening in its fore part. The lateral compartments are subdivided by transverse partitions, which communicate with those of the same side. MACRONES MENODA, H. B. pl. 1. f. 72. Bagrus trachacanthus, Cuv. et Val. Hab. Large rivers of Bengal, Orissa, and Burmah. M A C R O N E S TENGANA, H. Buch., Fishes of Ganges, pp. 176, 377, pl. 39. f. 58. B.vi. D. 1|0. P.\. V. 6. A. ± C. 15. Length of head \, of caudal \, height of body \ of the total length. |