Bulletin of the United States Fish Commission Seattlenwf
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%-A REVIEW OF THE GENERA AND SPECIES OF SERRANID& FOUND IN THE WATERS OF AMERICA AND EUROPE. BY DAVID STARR JORDAN AND CARL H. EIGENMANN. The family of h’evranida: includes many of our most important food fishes. The group comprises the various species popularly recognized as salt-water p rch at~d1?a8s, the groupers, garrupas, hinds, cabrillas, jaw-fishes, together with the striped bass of digerent species which inhabit or asoend our rivers. Nearly a hundred species are fouud in North American waters, aud of these every one, according to its size, is valuable as food. Some of them, popularly known as “jew-fishes,” are among the very largest of spiny-rayed fishes, aud many of the smaller forms are remarkable for the brilliancy of their coloration. This present paper contains an enumeration of the genera and species belonging to the family of Serranidct! found in tbs waters of America and Europe, together with the syuonymy of each, and analytical keys by which the different groups may be dis- tinguished. An earlier paper by Professors Jordan and Swain (Proc. U. 5. Nat. Mus., 1884, p. 358-411) has served as the basis of our studies of the Epinephelilza:,but this paper has been supplemented by the study of a very much larger amoirnt of material, aud the whole group of Berranidm has been brought under co nsideration. We have examined all the specimens of Serranidct! now contained in the Museum of Uoinparative Zoology at Uambridge, Massachusetts,* and all that are in the iniiseuin of the Indiana University. A large part of the material in the U. S. National Museum we have also studied, and also most of the original types contained,in the museum at Paris and in the British Museum. We have been indebted to Prof. Alexander Agassiz and to Mr. Samuel Garman for the free use of the specimens in the Museum of Oomparative Zoology. We are also indebted to Miss Elizabeth a. Hughes for help iu tho compilation of synonymy and in the preparation of skulls. For all statements regarding South American specimens the senior author is alone responsible. From the family #ermn.idct+ as understood by us, we exclude Oenfifopomzcs,which, although certainly allied to the Latin@,should, according to Dr. Gill, stand as a yep. arate family. The Lobotidm (Aobotc~)stand nearer, but having 110 teeth on vomer or palatines, they may be kept in a separate group. The Priacanthidm (Priacantlws and *Except,ing tho sub-family Latism. $ 329 330 BULLETIN OF THE UNITED STATES FISH COMMISSION. Pseudopriacanthus) should certainly be omitted from the Serranid m, as should Apogon and its allies, among which are apparently the two aberrant Cuban genera, Liopropoma and Chorististium. We are not quite sure that Rypticus, Percichthys or even Morolte should be retaiued among the Serranidm, but we prefer for the preseiit to regard the three groups typified by these genera as sub-families of Serranidm, rather than to attempt to dc4ne them as distinct families. The Percidm (Perca, Stizostedion, Aspro, Etheostoma) stand near ..Yorone and Per- cichthys, but they are fairly well defined by the greatly increased number of vertebrre, a character associated with their fresh-water life and northern distribution. From all Serranidm they further ditf'er iu having two anal spines. Near also to the Serfa- nidm is the singular group of North American sun Bshes or C!entrarchidm. In these, however, the pseudo-branchia: are obsolete arid the general form of the body is notably ditl'erent. The American genera of Serranidm fall naturally into six groups, which we may call sub-families, although the relatioil of two of these groups (Xerraninm and Epi- nephelinre) is almost too close for such designation. These six groups, Brammistinm, Zpinepldinm, Serraninm, Anthiinm, Latin@,and Percichthyinm, are typified respectively by the genera Rypticus, Epinephslus, Scrranus, Anthias, Morone, and Percichthys. They are easily recognized, aud in most cases readily defined, riotwithstanding the bot that most European naturalists have confounded Epinepheltcs with rScrranu8, while some have placed in the gems Anthias not only genuine Serranham, but also tipecies of the Xparoid group of Lutjaninm. The American Grammistinm all belong to a single genus Rypticus, Brammistes having no American representatives. The recognized genera of Xpinephelinm are fairly well defined, and although most of them arc closely allied to each other, there is no evidence of any intergradation of such a char;icter as to efface our lines of generic division. The Serraninm are equally varied amoug themselves, but the lines of division are less sharply marked, and certain species form conuecting links between one genus and another. Authors have divided the group or sub-family into numerous genera, but these genera are not separated by strongly marked characters, and most of them might well be placed as sub-genera under Serranus. The species of Anthiinm are not numerous, but the generic differences in this group are more marked thari those separating the genera of the two groups just named. The representation of this group in our fauna is not exteusive enough to give us a clear idea of the mutual relations of the forms included in it. We unite under the sub family name of Latince (the more usual name LaOracinm not being available, as the name Labrax properly belongs to the genus Hexagrammus, of which name it is a later synonym) certain Serranidm, which show more marked re- semblances to the genus Perca. These are characterized in general by the divided dorsal, the villiform teeth, and by the absence of a supplementary bone to the max- illary. A majority of the species are Asiatic, and but few of these have been studied by us. Some of them (Onidon)are said to lack the pseudo-branchia, but this is prob- ably not true. Some of the Latinm (Lateolabrax)approach the Percidm iu the increased number (35) of the vertebrae, which are about 25 in most of the others, but they differ from the Percidce in this, at least, that none of the latter (Perca, Stizostedion, Etheostoma, Acerina, Aspro, etc.), have more than two @pitiesin the aual fin, while all the Latin@ REVIEW OF THE SERRANIDB. 331 have three. Most of the species of Latinm found in Europe and North America are closely related, and might well be referred to a single genus-Morone. Lutes and Euhlia are, however, quite unlike Morone, and perhaps should be placed in different groups. The sixth sub-family, Percichtii~ina.,is still closer to the Peroidm, agreeing with the perch in the general form of the liead and body, in the increased number (36) of the vertebrm, and in the armature ofthe head. The species have, however, tiwee anal spines, t.here 1s a large suppletnental maxillary, the scales are scarcely ctenoid, and the spinous dorsal is short. If a division is to be made betaeeu PercidB and &eSerranidce, certaiiily PerclchtJby8 should be placed in the latter family. Of the 119 species here admitted, tile followiug (32 in nnmber) have not been stud- ied by us: Rypticus uigrornnculatus. Epiuophelus ohrysotmuia. Odontanthias asperilingois. Rypticus arenotus. Derrnatolopis nngiistifrons. Odoutanthias tousor. Rypticua bicolor. Bodiams pauenruuuis. Bathgantbiau roseus. Polyprion oxygoneios. Bodinnus taniops. Dicun trarchus orientnlis. Hernilritjauus paytousis. Hypoploctrns gei~~ma. Dioeotrarchns punctatus. Alphostes pictuH. Hypoploctrm crocotns. Latus nilotica. Epinephelus aspornus. Diploctrum concoptione. Peroichthys lavis. Epiuepholus cauinns. Serrauus nnuularis. Percichthys melanops. Epiucplielw goroousis. Sorrtuas flavescous. Percilia gillissi. Epinophelus muotis. Sor rau us per uauu~. Percilia gracilis. Epinephelus alexandrianus. Sorrauus oastelriaui. dNA LYSIS OP SUBFA MILIES OP SEfiRANIDAE COMMONCHARAUTERS.-BO~~ oblong, more or less compressed, covered with adhereu t scales of moderate or small size, which are usually but not a1 ways ctenoid. Mouth moderate or large, not very oblique, the premaxillary protractile aud the broad maxillary not slipping for its whole length into the sheath formed by the preorbital, which is usually narrow. Teeth all conical or pointed, in bauds, present on jaws, vomer and palatines." U-ill-rakers long or short, usually stiff, armed with teeth. Gills 4, a long slit behind the fourth. Psendo-brauchia present, usually large. Lower pharyngeals rather narrow, separate, with pointed b66th. Gill-membranes separate, free from the isthmus. Branchiostegals ~ormaIly7 (occasionally 6). Oheeks and opercles always scaly ; Iweoperclc with its margin more or less serrate, the opercles usually ending in oiie or two flat spine.like points. Nostrils donble. Lateral line siugle, not extendiug on the caudal fin. Skull without cranial spines and usually without well-developed caveruous structure. No suborbital stay. Dorsal spines usu. ally stiff, 2 to 15 in number; soft dorsal with 10 to 20 rays. Anal flu rather short, its soft raya 7 to 12, ibs spines three (obsolete in one subfamily). Ventral8 thoracic, I, 6, normally developed. Pectorals well developed. Uaudal peduncle stout, the fin vari- ously formed. Vertebra usuillly about 10 + 15 (more in some of the Latin@and Per- cichtkyince; 16 + 19 in LateoZabru;o; 16 + 20 in Peroiohthy8). Air bladder present, usually s1na11, and adherent to tho walls of the abdomen. Stomach cacal, with few or many pyloric appendages j intestines short, as usual in carnivorous fishes. * Except in Peroitia, wliioli has bluut tooth, and nom on the palatines. 332 BULLETIN OF THE UNITED srxrEs FISH COMMISSION. a. Anal spines obsolete; dorsal spines 2 to 8; scales very small, smooth; teeth a11 villiform; max- illary with a supplemental bone; head scaly; lateral line normal ; gill-rakers rather few and short; caudal rounded; preopercle without augle or serrations, but with two or three spinous teeth above ._.-__ -. .___ __ __ __ -.__ __ .- - - .__. __ .. -. - .___ -.-. ~~RAMPIIBTINAC, I. aa. Anal spines 3; dorsal spiues 8 to 14.