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Show 106 PISCES • . We now pass to Percoides with seven branchial rays, and a single dorsal, the teeth small and crowded. AcERINA, Cuv. Cavities or depressions on the bones of the head; preoperculum and operculum with small spines, but not dentated. Two fresh-water species are found in Europe. .11. cernua; Perea cernua, L.; Perche goujonniere; Bl. 53, 2; Cuv. et Yal. III, pl. xli. A small fish of an agreeable flavour, very common in all the fresh-water streams of Europe; it is of an olive colour, spotted with brown . .11. schraitzer; Perea schraitzer, L.; the Schrretz; Bl. 332. Larger, and has interrupted blackish_lines on the sides: it inhabits the Danube.(l) RYPTicus, Cuv. Small spines ol'l the opercula; the scales, like those of the Grammistes, small and concealed in a thick epidermis; particularly distinguished from the Grammistes by the single dorsal. R. saponaceus; .llnthias saponaceus, BJ., Schn.; Parra, xxiv, 2. An American species which has received this name on account of its soft skin, that is smeared with a frothy viscoshy.(2) PoLYPRION, Cuv. This genus, in addition to dentations in the preoperculum and spines, or the operculum, is marked by a bifurcated and very rough crest .o~l the latter; the bones of the head are generally covered with aspent1es. nella, Cuv., the figure of which was taken by llloch from Plum'ter d 'th 1 . . , an , w1 some a •t eratJon gtven as the Sparus erJ' Nt/trinus ' pl. 274, ·-Bod• a..: a, Bl ., 227 , or MnZ Cara ata, Margr., 167;-Mes. eltrysurus, Cuv. et Val., If, xl, which is also the SpaM ehrysurus, Bl., 262,. or .!learapitambtt ofMarcgr. , 155·, the .11n thw' s ra b~' rru bz' a, Bl ., Schn., Parra, XXII, 1; the Spare demi-lune,. Lacep. IV, iii, 1; and the Colas of Guadeloupe, Duham. Sect. IV, pl. xii, 1;-M. eynodon, Cuv. or .!lntldas caballe-tr ott e, Bl.,h Schn., Parra, X. XV,. 1;-.!l.nth. J·oeu•. Bl. • Schn . , p arra, XXV, 2·, -o(p.'1 . Leu rta'c ant us, Bl·. , 27.9 , whtch 1s also the Vivanet c1N· "•i1 ,. Lac t':p ., IV, 1· v, 3., an d th e M uanups akc uttr·o strts, Desmar.;-M. sillao• Russel ,. 100,.· -M.. zu nul at us, cu v., . ungo ar ' Lm. Trans., liT, xxxv, 6;-Lutj. erytltro.pterus, m. 249;-Ltttj.lut· ;9a nus,M .l d., 2. 4.5 ;-Sparus malabaricus' l3l ., Schn .;-M.· rangus, c uv., R usse1, 4;--:- · rapz~lz, I~., 95;-.!l.lphestes gemlrra, Bl., Schn., pl. 51, 2, and the other spectes descr1bed m our second volume. (1) Add Perca.aeerina, Guldenst., Nov. Comment. Petrop., XIX, 455. (2) Add Rypttcu8 arenatus, Cuv. et Val. III pl 1 · 1 , ·X VI. ACANTIIOPTF.RYGl I. 107 Polyp. cernium, Valenc.; Mem. du Mus. torn. XI, p. 265; and Cuv. and Val., III, pl. xlii.(l) An eno1·mous species found in the Mediterranean; it is clouded with brown on a lighter ground. CENTROPRISTis, Cuv. All the characters of Serranus except that there are no camm, and that all the teeth are small and crowded; preopercttlum dentated and operculum spinous. Oentrop. nigricans, Cuv.; Corypluena nigrescens, Bl., Schn.; Cuv. and Val., III, pl. xliv. (The Black Perch.) Blackish brown; the caudal fin trilobate when young. It becomes large, and is found in the United States.('2) GRISTEs, Cuv. Only differs from Centropristis in the margin of the preopercu~ um, Which is entire and not dentated:(3) The genus PEReA, as defined by Artedi and Linnreus, terminates here; but there remains a number of fishes which apJlroach it, although peculiar characters compel us to arrange them in separate genera. We will begin with those Percoides which have less than seven branchial rays. We may also subdivide them according to the number of their dorsals, ·and the nature of their teeth. Of those with a single dorsal, some have hooked teeth among the others : they are the CIRRHITES, Commers. Preoperculum, as in Mesoprion, dentated, and the operculum terminating in an obtuse angle; distinguished by the inferior rays of the pectoral, which are stouter and not branched, that extencl a little be- (1) The .!lmpkiprion australis, Bl., Schn., pl. 47, or amerieanus, lb., p. 205; and the .ll.mph. oxygeneios, lb., or Perea prognathus, Forst. do not appear to us distin_ guisbable from the cernium. (2) It is abo the Lutjan trilobe, Lacep. 11, xvi, 3, and the Perea varia, Mitch ill, Trans. New York, I.-Add Perea trifurea, L. ;-La Seorpene de Waigiou, Quoy et Gaym. Freycin., Zoo!., L Vlll, 1; and the other species described in the third Vol. of om· History of Fishes. (3) The Laure salmoi'de, Lacep. IV, v, 2, or Cyehla variabilis, Lesueur, Ac. Nat. Sc. Phil., Cuv., et Val., Ill, pl. xlv;-Gr. macquariensis, lb., p. 58. \ |
