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Show 1870.] SURGEON F. DAY ON ANDAMAN-ISLAND FISHES. 681 24. AMBASSIS UROTEENIA, Blkr. L. 1. 26. L. tr. 4/10. Found at the Andamans and Nicobars. 25. AMBASSIS DUSSUMIERI, C. & V. Taken in salt water. 26. AMBASSIS MACRACANTHUS, Blkr. D. 7|i. V. 1/5. A. 3/9. L. 1. 27. Length of head f, of caudal f, height of body £ of the total length. Eyes. Diameter 1 of length of head, ^ of a diameter from end of snout. Anterior margin of orbit serrated, two spines at its posterior superior angle; preorbital serrated. A double serrature at the preopercle. Subopercle with four teeth at its angle. The maxilla extends to below the anterior third of the orbit. Teeth villiform. Fins. Second dorsal spine one-half the length of the body ; third anal spine the longest in that fin. Lateral line ceases after a few scales. Colours. Silvery, without any lateral stripe, except in preserved specimens. Second dorsal spine of a brilliant orange, the interspace between it and the third black. Hab. Andamans, in the estuaries. 27. APOGON MULTIT^ENIATUS, Blkr. D. 6\\. P.15. V. 1/5. A. 2/8. C. 17. L. 1. 28. L.tr.2|/7|. Length of head ^, of caudal \, height of body above \ oi the total length. Eyes. Diameter f of length of head, 1 diameter from end of snout, | of a diameter apart. Lower limb of preopercle crenulated. Teeth large and widely set; also villiform on vomer and palate. Fins. Second dorsal spine not g of height of body below it. Caudal forked. Colours. Greyish, with nine dark brown longitudinal bands, three times as wide as the ground-colour, extending from the head nearly to the tail, which has a dark spot at its base. First dorsal black. Ventral nearly black, other fins red. Dorsal, caudal, and anal with dark margins. 28. APOGON HYALOSOMA, Blkr. D. 6|i. P. 15. V. 1/5. A. 2/8. C. 17. L. 1. 24. L. tr. 2|/Very common. Specimens captured up to 6 inches in length. 29. APOGON ORBICULARIS, Kuhl & V. Hasselt. D. 6|g. P. 12. V. 1/5. A. 2/9. C. 17. L. 1. 25. L. tr. 3/Colours. Olive; a dark zone round the body in front of the first |