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Show 108 PISCES. yond the membrane; but six rays to the branchire. They all inhabit the Indian Ocean.(l) Others with less than seven branchial rays are furnished with small and crowded teeth only, or, at least, have no hooked ones. CHIRONEMus, Cuv. The inferior part of the pectorals with the same simple rays as the Cirrhites.(2) PoMOTis, Cuv. Fishes with a c~mpressed and oval body, characterized by a membrano~ s prolongation at the angle of the operculum. They inhabit the rivers, &c. of America.(S) CENTRARCHus, Cuv. Characters of the Pomotis, and numerous spines in the anal fin; a group of small and crowded teeth on the tongue.(4) From America. PRIACANTIIus, Cuv. The body oblong, compressed, and, as well as the entil'e head, and even both jaws, cove1·ed with small rough scales; preoperculum dentated and its angle spiniform and dentated. The seas of hot climates.( 5) DuLEs, Cuv. The operculum, as in Centropristis, tel'minating in spines; preo· perculum dentated and small; crowded teeth; but six rays to the branchial membrane.(6) (1) The Cirrltite taclteti, Lacep., V, 3, which is also his Labre marbre, III, v, 3, and p. 492;-the Cirrhite pantherirz, or Spare pantherin, lb., IV, vi, 1, and p.160, and Seb., III, xxvii, 12;-Cirrhite3 vittatttS, Cuv., Renard, I, xviii, 102;-Cirrli. aprinus, Cuv. et Val., lll, xlvii, &c. (2) One species only is known, Chiron. georgianus, Cuv. et Val., III, p. 78; from New Holland. (3) Pomotis vulgaris, Cuv., or Labrus auritus, L., called Pond-Perch in the United States. Catesb., II, viii, 2, Cuv. et Val., III, pl. 49. (4) Centrarclms ameus, Cuv., or Cycltla amea, Lesueur, Ac. Nat. Sc. Phil.;-C. sparoi'des, or Labre sparoi'de, Lacep., III, x.xiv, 2;-Labre iris, Lac., IV, v, 3, which is also his Labrc macroptere, III, xxiv, 1. (5) .llntltias macrophtalmus, Dl. 319, or Cataluja, Parra, XII, 1;-.ll.ntltias boop8, Bl. Schn. 308;-Scimna ltamruhr, Forsk. ;-Labrus cruentatus, Lacep. III, ii, ~. nnd the other species described in our third volume. (6) Dules auriga, Cuv. et Val., III, li;-D. tamiurus, lb., LID, and the other species described vol. liT. ACANTHOPTERYGII. 109 D. rupeatria, Cuv., a species resembling a carp, and highly flavoured, is found in the fresh waters of the isles of Bourbon and of Mauritius, where it is much esteemed.( I) THERAPON, Cuv. Preoperculum, dentated; operculum terminating in a stout spine; a strongly emarginate dorsal between the spinous and soft part: teeth of the external row pointed and stronger than the rest. In some, the teeth of the vomer fall out at an early period. They inhabit the waters of India, and are remarkable for a natatory bladder, divided into two chambers by a stricture.(2) It is hardly possible to separate the DATNIA from them, although they want the palatine teeth; their profile is more rectilinear; their dorsal less emarginate.(3) PELATES, Internal and opercular characters, the same as in Therapon; but the teeth are uniformly small and crowded, and the dorsal but slightly emarginate.( 4) HELOTEs, Cuv. Also very similar; the dorsal deeply emarginate; they are particularly distinguished by the anterior range of teeth, which are tribolate.( 5) Most of these fishes are marked with longitudinal blackish lines on a silvery ground. The Percoides, with less than six branchial rays and two dorsals, constitute but two genera. TRICHODoN, Steller. Preoperculum with strong spines, operculum terminating in a flat point; no scales; mouth cleft almost vertically. But one species is known, Tr. Stelleri, Cuv.; Trachinus trichodon; Pall. Peters b. Mem. (1) This is the Centropome de roche, Lacep., IV, 273. (2) Holocerztrus aervus, Bl., 238, 1, or &iama jerbua, Forsk. ;-Hol. 4-lineatu.a, Bl. 238, 2;-Tlter. puta, Cuv. Russel, pl. 126;-Ther. theraps, Cuv., Cuv. and Val., ID, liv, and the others described Vol. ill. (3) Datnia Buchanani, or Coius datnia, Buchanan, pl. ix, f. 29, and Cuv. and Val., ill, lv;-Dat. cancellata,Ib., p. 144. (4) Pelates quinque-lineatw, Cuv., et Val., III, 56. (5) Hewtu 6-lineatus, Cuv., ct Val., III, lvii, or Esclave aix lineB, Quoy et Gaym., Voy. de Freycin., Zool., LXX, 1. \ |
