5 RARY OF THE UNIVERSITY OF CALIFORNIA LIBRARY OF T 9 i= RARY OF THE UNIVERSITY OF CALIFORNIA LIBRARY OF T eg£f r\ I r^\ \ r\ ^&!& OF CALIFORNIA LIBRARY OF THE UNIVERSITY OF CALIFOR! OF CALIFORNIA LIBRARY OF THE UNIVERSITY OF CALIFOR SAlTi? LONDON IIENR THE NATUBALIST'S LIBRARY. EDITED BY SIR WILLIAM JARDINE, BART., F.R.S.E., F.L.S., ETC., ETC. VOL. XXXVIII. ICHTHYOLOGY. FISHES OF THE PERCH FAMILY. BY THE EDITOR. EDINBURGH : W, H. LIZARS, 3, ST. JAMES' SQUARE. LONDON : HENRY G. BOHN, YORK ST., COVENT GARDEN, • v- • BIOLOGY LIBRARY G CONTENTS. PAGE MEMOIR OF SIR JOSEPH BANKS . . .17 ICHTHYOLOGY— Introduction 4(J Genus PERC A— Perch . . . . .91 The Granulated Perch. Perca granulata. Plate I. . . 92 Ciliata . . . . .93 Italica ..... 95 labrax . . . . .96 The Basse or Sea Perch. Labrax lupus. Plate II. ... 98 lineatus . . . . .99 The Lates of the Nile. Lates Niloticus. Plate 111. , . 101 nobilts . . ,102 viil CONTENTS. 1JM0 Eleven-Spined Centropome. Centropomus undecimaiis. Plate IV. . 103 The Common Pike-Perch. Lucioperca sandra. Plate V . . . . 105 marina .... 107 Americana . . . . ib. The Black Bass of the Huron. Huro nigricans. Plate VI, . . . 103 The Ruby-Coloured Etelis. Etelis carbunculus. Plate VII. . .110 The Spined Niphon. Niphon spinosus. Plate VIII. . . Ill The Armed Enoplossus. Enoplossus armatus. Plate IX. . .112 r\vo Banded Diploprion. Diploprion bifasciatum. Plate X. . . 115 The iMediterranean Apogon. Apogon rex Mullorum. Plate XI. . .117 CONTENTS. \X PAGE Apogon trimaculatus . 119 quadrifaciatus . . . . ib. novemfaciatus . . ib. Arabian Cheilodipterus. Cheilodipterus Arabicus. Plate XII. . . 120 — quinquelineatus . 121 The Large-Eyed Pomatome. Pomatomus telescopium. Plate XIII. . . 12: Commerson's Ambassis. Ambassis Commersoni. Plate XIV. . 124 - nama ..... 120 — baculis . . . . jb, • ranga . . . . . ib, The Zingel. Aspro vulgaris. Plate XV. . . 127 The Oriental Gramistes. Gramistes orientalis. Plate XVI. . .129 Perches with a Single Dorsal Fin . .131 Lettered Serranus. Serranus scriba. Plate XVII. , 132 C CONTENTS. FAGB The Spined Serranus. Serranus anthias. Plate XV HI. . . 135 tonsor . . . .136 oculatus ib. ceneus ..... 137 The Long Tailed Serranns. Serranus phceton. Plate XIX. . . 138 Large Finned Serranus. Serranus altivelis. Plate XX. cyanostigma myriaster .... Leopard-Spotted Plectropoma. Plectropoma leopardinus. Plate XXI. Beautiful Plectropoma. Plectropoma puella. Plate XXII. Banded Diacope. Diacope rivulata. Plate XXIII. . octolineata macolor sanguinea CONTENTS. XI PAQB One Spotted Mesoprion. Mesoprion uninotatus. Plate & XIV. . 148 vivanus . . . .149 Golden-Tailed Mesoprion. Mesoprion chrysurus. Plate XXV. . 150 The Ruffe. Acerina cernua. Plate XXVI. . . 151 Many-Spined Polyprion. Polyprion cernium. Plate XXVII. . 153 American Black Bass. Centropristes nigricans. Plate XXVIII. . 156 scorpenoides . . . 157 truttaceus . . . ib, The Salmon-Formed Growler. Grystes salmoides. Plate XXIX. • 15* The Brazilian Rypticus. Rypticus arenatus. Plate XXX. . . 160 Genus Cirrhites , « 161 Chironemus Oeorgianus 3 * 162 CONTENTS. Pomotis PA OS 162 Ldbrus auritus . ib. Aphredoderus . 163 Centrarchus ib Priacanthus .... ib. Dules . . . ' „ . 164 Dulesauriqa .... ib. Dules marginatus . ib. Therapon .... ib. Datnia . 165 Caius Datnia .... ib. Pelates ib Helotes ..... ib. Trichodon .... . 166 T. Stelkrii ,. . ... ib. Sillago ..... . ib. Myripristis .... 167 Helocentrum .... . ib. Beryx . 168 Trachichtys .... . ib. Trachinus 169 Percis .... ib Percopis ..... . 169 Uranoscopus .... 170 Sphyroena . . ib. CONTENTS. Xlli PAGE Paralepis . . . . .170 Poll, nemos . . . . .171 ihe Mullets ..... ib. MuUus, Linn. — Mugil of the Ancients . . ib. after their time that the science and its promoters became more generally known. Artedi, a name dear to every ichthyologist, with Linnaeus, and his numerous pupils, pursued it in its systems; Pennant and Pallas studied it with enthusiasm, and were assisted in their knowledge of species 54 INTRODUCTION. by the results of the scientific voyages of Com- merson, Sonnerat, &c., and in their physiological researches, by the works of Haller, Camper. Monro, and John Hunter. Following these great names, we had, for the arrangement and descriptive parts, the Ichthy- ologies of Lacepede, Russell, Shaw, Dumeril, Risso, Rafinesque, Donovan, Jurine, Hamilton Buchanan, and the outline of Cuvier in the Regne Animal : these men availed themselves of the numerous scientific voyages which Europe, at the termination of the last and commencement of the present century, has been so liberally supporting, and which have collected so much information in every branch of Natural History ; while in the physiological details may be men- tioned the names of Geoffroy St. Hilaire, Cams, Humboldt, and Sir Everard Home. In this immense array of science, in which have been noted, as it were, only the very heads, a stupendous collection of facts have been recorded, which, however important, curious, or amusing, remained alone on the authority of their discoverers, memorials of their persevering research ; but they were neither arranged nor collected, and the want of some general system for this science, by which a definitive state of our knowledge could be gained, was indispen- INTRODUCTION. 55 sable for its progress, and eagerly called for by every naturalist in Europe. The long experi- ence of the Baron Cuvier was destined to com- mence the filling up of this gap ; and the foundation of the structure has been laid, and so far raised, in a manner worthy of its builder, in the work we have selected as our " Text Book" for the present volumes. In 1828, Cuvier com- menced the arrangement of the materials which he had been collecting during his whole life, for a " Histoire Naturelle des Poissons," and with the assistance of a younger, but able na- turalist, has published nine volumes, illustrating the greater part of the first section of tht divisions into which these creatures have been separated by him. We now propose, after giving a short sketch of the nature and uses of Fishes, to proceed to the detail of those contained in the first section of Cuvier's arrange- ment [See Table of Cuvier's arrangement, p. 86], so far as the limits of this volume will allow, and at the same time making use of the infor- mation which several interesting voyages have given, since the publication of the first parts of the Baron's work. But before proceeding with this part of the subject, we must very shortly notice another branch, which, till lately, has been comparatively 56 INTRODUCTION. neglected — that of Fossil Ichthyology. Pre- vious to 1600, there are perhaps few records of fossil fishes. Fabius Colunma and Worm wrote De Glossopetris ; in the following century, we had Scheuchzer and Fischer ; and, towards its conclusion, the Ittiolitologia Veronese of Yolta, a large folio containing seventy-six plates, which, if not very faithful in execution, showed the interest which was at this time excited; but it was not until so late as 1818, that an enu- meration of the fossil species, previously known, was first attempted by De Blainville in Le Xouveau Dictionnaire d'Histoire Naturelle. Since then, the science has gradually advanced, from its intense interest, and its connection with the studies of the geologist ; and at the commence- ment of the last year, it assumed a most import- ant station from the researches of a naturalist of Switzerland, and the appearance of the first numbers of a work devoted to this department. The Eecherches sur les Poissons Fossiles of Louis Agassiz will undoubtedly mark the commence- ment of a new era in this science ; for, inde- pendent of the perspicuity and clearness with which the department itself is illustrated, the study of existing species being necessary for a knowledge of those which are extinct, has in- duced the author to give his views of the science INTRODUCTION. 57 generally, and to propose an arrangement en- tirely different from those of his predecessors, the characters of which are principally taken '^om the form and structure of the scales. His orders are as follows : — I. Placoidians — So named from the irregu- larity presented by the solid parts of their cover- ing, composed of masses of enamel. It includes many fossil forms, the Sharks, and Hays. II. Ganoidians — Containing varied forms, the Sauroid fishes, Siluri, Sturgeons, &c., charac- terized by scales of an angular form, composed of two substances, plates of horn or bone, placed one upon another, and covered by a thick layer of enamel. III. Ctenoidians — The common character is in the thin plates forming the scales, being pecti nated or toothed on their posterior edge, which makes them feel rough to the touch. It con- tains the Chetodons, Pleuronectes, the Percoid fishes, &c. YI. Cydoidians — They have the scales formed of simple plates, those of the lateral line with a tube for the transmission of the lubricating mucus. It includes the Mullets, Salmon, Cy- prini, &c.* * If we estimate the number of fish now known, to amount to about 8000, we may state that more than three- 58 INTRODUCTION. The situation in our systems which has been allotted to fishes, has generally been the fourth place, or the lowest rank, in the scale of the ver- tebrata. They seeni to have been more particu- larly connected with the class which immediately precedes them, by those most extraordinary crea- tures, long since extinct, but which now occupy so much of the attention of the geologist, the Ichthyosauri or Fish-Lizards, and which the dis- covery of new forms lead us to believe were a numerous race, perhaps possessing intermediate ability to exist either in air or water. Fishes are entirely inhabitants of the waters, peopling this immense portion of our globe with their shoals, and serving to keep in check the varied creatures of still lower structure, while they themselves are held in check, and afford sustenance to millions fourths of this number belong to two only of the above men- tioned orders, the Cycloidians and Ctenoidians, whose pre- sence has not been discovered in formations below the chalk, The other fourth part of living species is referable to the orders Placoidians and Ganoidians, which are now far from numerous, but which existed during the whole period which elapsed since the earth began to be inhabited, to the time when the animals of the Greensand lived. M. Agassiz does not know a single species of fossil fish which is found successively in two formations, while he is acquainted with a good numbe? which have a very consider- able horizontal extent — Ed. Phil. Jour. xxxv. 175. INTRODUCTION. 59 which have been placed in our systems above them. In form they are perhaps the most varied beings in creation, and the most fertile fancy could scarcely depict a shape or appearance to which a resem- blance would not be found. They are of " hideous and loathsome bulk," or of the most graceful forms, and gorgeous and resplendent colours ; but still among all these we may trace the characteristic shape of a fish, in the head being placed at once upon the shoulders without any length of neck, followed by the body, and finished by the tail ; and the parts will be all adapted to the different modes of gaining sustenance, whether it is to be procured by stealth arid deceit, or by strength and swiftness. Living in a different element from that which maintains most of the mammalia and birds, we find the external covering of fishes to consist of plates, or scales, supplying the place of hair or feathers. The skin of fishes completely surrounds the body, clasping close to the muscles, and serving as an outward skeleton, as the bones do for a protection to the inward parts. The scales are composed of two substances, the one allied to that of horn, the other to that which forms the enamel of teeth. They are placed in little mucous cavities of the corion, or true skin ; they are generally formed of delicate plates or leaves, secreted by the skin, 60 INTRODUCTION. and placed above each other in successive layers, each of which can be separated by maceration in water. When the enamel is present, it generally forms a thick layer above these. They are often transparent, and transmit the bright colours and metallic tints which are secreted beneath them, while the different manner in which the layers are deposited, give rise to many of the figures we see, as it were imprinted, on their surface. A few species have the skin nearly smooth, and appa- rently defenceless, and without scales or plates. The scales are held in position by a fold of the epidermis, often so delicate as scarcely to be visible, but which covers almost the whole part of the fish exposed to our view. They fold over each other in different modes of imbrication, sometimes regularly like the tiling of a house, sometimes in a lateral form, or with the lower longitudinal edge folding over the upper edge of the scale below ; sometimes alternately, so that the joining of the preceding scale is opposite the centre of that which follows, while in others OF 7Hf UNIVERSITY INTRODUCTION. 61 there is no imbrication at all, and the edges meet like plates or the flags of a pavement. But one of the more remarkable contrivances for hold- ing them in connection, is seen in some fossil species, where the incumbent scale is furnished with a hook, or tooth, which fits into a corres- ponding hollow in the lower edge of the upper scale, better understood by inspecting the accom- panying cuts of those of (1) Paleoniscus* Freies- fabeni, and (2) Pliolidophorus\ macrocephaluSy Agass. 1. 2. The skin is immediately attached to the muscles, the outer lateral layer of which will be seen in the accompanying plate, (PL XXXI.) One great muscle (a) occupies nearly the whole side, and is almost the only one which is externally , ancient ; 0*0*01, onisctcs. r, scale-bearing, like a snake. INTRODUCTION. visible. It arises from the upper part of the head, at b c, and the bones of the shoulders, and is inserted into the sides of the bone of the tail. Tt is separated above from its corresponding muscle on the opposite side, by the spine and its epiphysis, by the deep muscles of the inter spinal bones, and by the ribs which surround the ab- dominal cavity; beneath it widens to admit the lower fins and the muscles which belong to them. The structure of this great muscle is complicated. It is transversely composed of slips held together by a tendinous expanse, and which generally equal the vertebrae in number. The layers or plates are best seen when the fish is boiled, and the cartilaginous substance has been dissolved. Longitudinally it is divided into three bands. In the centre band a slight furrow may be observed, d e, in which are placed the mucous glands. The late Baron Cuvier assumes the common perch, among fishes, as the form in which the greatest general perfection is exhibited (see Common Perch, Plate XXXV.); and being a species familiarly known to almost every one, will serve better than any other to convey an idea of this class of beings ; and the accompanying Plate (XXXII. of the Skeleton of the Common Perch), exhibits the bony structure in osseous INTRODUCTION. 63 fishes. No. 1 is the principal frontal bone; 2. Anterior frontal bone ; 3. Posterior frontal bone ; 4. Temporal bone ; 5. Parietal bone ; 6. Maxillary bone ; 7» Intermaxillary bone ; 8. Suborbitary bone; 9- Supra scapular bone; 10. Preopercle ; 11. Opercle; 12. Subopercle ; 13. Interopercle. The above references will enable the observer to understand the characters of the genera, which are, in a great measure, taken from the form of these bones in the head. In the perch, and indeed in all those fishes which are endowed with extensive locomotive powers, or require swiftness to seize their prey, the tail is the great organ of motion, while the fins are the balancers or directors, a contrary arrangement to that shewn in the members of those creatures of the land and air, where the tail is the director or helm, the feet and wings the movers. The fins on the upper surface serve to balance the body, those on the lower surface to turn it, to move it slowly, and to keep it suspended in strong currents ; but in all these, the motion or assistance of the tail is observable. In very swift motion the fins are quiet ; the creature could not keep them extended, far less use them, and they fold closely to the body, and offer no resistance to its rapid passage through the water. In what are called flat fish, however, and in all those whose horizontal 64 INTRODUCTION. surface is large, the fins assist considerably in progressive motion, and their motion upwards and downwards, and not in the line of progression, offers no resistance. Another powerful accessary in the buoyancy of fishes, is what is called the air, or swimming, bladder ; and whatever functions it may here- after be found to possess, similar or resembling those of the lungs of aerial beings, there can be no doubt of its assistance when a fish wishes to rise or sink. It is generally situated in the upper part of the ventral cavity, running pa- rallel to the spine, and it often communicates with the intestinal canal, by an opening placed near the boundary between the oesophagus and the stomach, though in some fishes no communi- cation or opening has been discovered. In those where no communication with the oeso- phagus has been found, it is conjectured that the air in this organ is secreted within it ; and this opinion has been strengthened by the presence of a red fleshy body occurring on the interior of the walls of the bladder, and by the influence which a wound in the bladder produced in the function of the gills upon the blood. It is a very curious subject, difficult to investigate, and several eminent ichthyologists have adopted the opinion of this organ in part performing the office of INTRODUCTION. 65 lungs. It is of various shapes, sometimes seeming like a simple bag extending the whole length of the cavity, sometimes cut as it were in two, by a narrow stricture, and having the appearance of two irregular sacks. The supply of air can be compressed by muscular action, and accordingly will serve to assist in raising or sinking the animal ; and it is remarkable, that in those fishes which reside much at the bottom, and seldom or never come to the surface, this organ is almost always wanting. But independent of the common manner of progressive motion among fishes, other means have been given them, by which either a great accession of power is added; or where the ordinary limbs are small, or wanting, organs of an entirely different nature have been constructed. In a genus of fishes, mentioned by almost all travellers as amusing the weariness of a long sea voyage, the immense development of the pectoral fins, and the power the animal possesses of raising and sus- taining itself for a considerable time above the waves, has gained for it the epithet of Flying. The action, however, appears to have more re- semblance to a long and vigorous leap, than to flight as practised by the denizens of the air. A difference of opinion exists as to the motion of the pectoral fins, whereby they are for the time E 66 INTRODUCTION. supported. Cuvier says the animal beats the air during the leap, but we question if this is said from actual evidence. Dr Abel, however, supports the assertion in his voyage to China ; but Mr Bennet, a later observer, is of a contrary opinion. " The flight of these fish," he remarks, " has been compared to that of birds, so as to deceive the observer ; however, I cannot perceive any compa- rison, one being an elegant, fearless, and inde- pendent motion, whilst that of the fish is hurried, stiff, and awkward, more like a creature requiring support for a short period ; and then its repeated flights are merely another term for leaps. The fish make a rustling noise, very audible when they are near the ship, dart forward, or sometimes take a curve to bring themselves before the wind, and, when fatigued, fall suddenly into the water. It is not uncommon to see them, when pursued, drop exhausted, rise again almost instantly, pro- ceed a little farther, again dipping into the ocean, so continuing for some distance until they are out of sight."* With this view we are rather inclined to coincide ; but however the motion is performed, it is certain that they can progress out of the water, according to Captain Hall, for a distance of at least two hundred yards, and * Bennet's Wand. i. p. 33. INTRODUCTION. ^7 according to Mr Bennet, to a height of from two to twenty feet. Another manner of transportation is by means of an apparatus by which the animal can fix itself to any object in motion. Many fishes are sup- plied with an organ of this kind, which also seems to be used as a means of keeping themselves secure amidst the turmoil of a storm, affixing themselves to rocks and other steady substances Among the most remarkable of these is the Re- mora, or Sucking Fish, far famed in ancient story for its power over the vessels of the mariner. These fishes are of a narrow lengthened form, the head large in proportion to the body, and furnished with a flat oval shield composed of transverse plates, each furnished with a row of fine teeth : this is termed the sucking plate, and by means of it they attach themselves firmly to the bodies of larger fish, or the bottoms of ships, and are thus transported. The common White Shark seems to be their most frequent carrier, to which four or five have been often found attached. The tail and fins of the Remora are all comparatively very small, and the fish has no air bladder. The Perca scandens transports itself, and scales rocks, and even plants that grow from the water, by means of the alternate use of the spines of the pectoral fins, and M. Renau has asserted that he 68 INTRODUCTION, knew a species of Lophius which walked about the house like a dog ; while the Doras costatus, by the bony arms of its fins, assisted by the plates under the belly, which work like those of serpents, can march over land as fast as a man can leisurely walk.* The body of fishes is lubricated by a slimy fluid, prepared in a series of glands generally placed near and about the fore parts, a beautiful natural arrangement, to allow the fluid to be car- ried backward ; or the same office is performed in a more mechanical manner by what is called the lateral line, and which is in reality a canal on the scales, which is either continuous, and conveys the lubricating fluid backwards from the head and neck, or has a communication with a series of glands laterally disposed. In the Skate there is a large serpentine vessel which surrounds the mouth, runs between the skin and the muscles at the sides of the five apertures into the gills, and likewise surrounds the nostrils ; then it passes from the under to the upper part of the upper jaw, where it runs backwards as far as the eyes. From the principal part of this duct, in the under side or belly of the fish, there are not above six or eight outlets ; but from the upper • Dr Hancock, ZooL Jour. INTRODUCTION. 69 part near the eyes there are above thirty small ducts sent off, which open on the surface of the skin. But besides this very picturesque duct, there is on each side of the fish, a little farther forwards than the foremost of the five breathing holes, a central part from which a prodigious number of ducts issue, to terminate on almost the whole surface of the skin, excepting only the snout or upper jaw. At these centres the ducts are all shut, and in their course have no commu- nication with each other.* In the skate the whole cellular substance of the nose or snout secretes a mucus, which is dispersed by bundles of tubes opening exteriorly. The Eel and Couger have large openings at different parts of the nose, communi- cating with numerous lengthened vessels analo- gous to the winding canals of the Skate.f But in almost every fish these have a distribution diffe- rently managed according to their wants, forming one of the most beautiful and necessary provisions in their whole structure. That of the Cod. from its simplicity, will best shew it, reduced from one of the characteristic plates of Monro. * Monro, pi. ri. viL t Cuvier, i. 252. 70 INTRODUCTION. a The termination of a large lymphatic, which begins at the tail and runs upwards on the side of the fish, receiving its branches from the skin and muscles of the trunk at nearly right angles. b The upper end of a mucous dwct, which runs upon the side of the fish nearly parallel with the lymphatic a, and which has numerous short branches, with open mouths, which pour out mucus upon the .surface of the skin. c is the continuation of the duct b cut open. d Another mucous duct, having no communication with b or c, and which discharges its mucus upon the surface of the skin of the under jaw by a number of short branches. One of the most remarkable contrivances in the economy of fishes, is their respiration. The medium which contains the air, being fatal to all terrestrial animals which would attempt to inhale them in conjunction, a different apparatus for their employment was necessary, which we find in the form of branchicE or gills, as they are termed, placed near the forward extremity INTRODUCTION. 71 of the animal, and protected by a bony case or covering, often defended by strong spines, which in the horrid array which covers some species, are almost always placed on these parts. This sort of respiration has been termed aquatic, and, among the vertebrata, is found in the larva or young state of some reptiles which spend the early portion of their existence in the waters, and in all the fishes. The gills are placed in immediate communication with the heart, and are composed of an innumerable series of delicate bloodvessels arranged in a fringe-like form upon the lower edges of four bony arches, which form the frame work of this structure. Water entering at the mouth, is forced out again at the posterior opening of the covers, and thus maintains almost a constant stream or rush through them, entering and again expelled, at intervals, similar to the respiration and expiration of animals. When withdrawn from the water, the delicate filamentous structure of the gills imme- diately collapses, and no muscular exertion, or convulsive action, can restore them to their former play ; when exposed to the action of air only, a kind of suffocation ensues, and death is the con- sequence. This is the general principle of respiration in this class of beings, but the struc- ture and its application is often modified. The admission and exit of the water is sometimes 72 INTRODUCTION. performed independently of the mouth ; and those species which can exist for longer periods than usual out of their native element, have the power of retaining a portion of water in a membranous sack or bag surrounding the gills, which keeps the filamentous structure moist, and enables the animal to continue the respiratory action. Such is the case with a very singular fish, the Doras costatus, a native of Demerara, which possesses the singular property of deserting the water, and travelling overland. In those terrestrial excur- sions, large droves are frequently met with during very dry seasons, for it is only at this season that they are compelled to this dangerous march, which exposes them as a prey to so many and such various enemies. When the water is leaving the pools in which they commonly reside, they simultaneously quit the place, and march over- land in search of water, travelling for a whole night in search of their object. " I have observed," adds Dr Hancock, " that their bodies do not get dry like those of other fishes when they are out of the water ; and if the moisture be absorbed, or they are wiped dry with a cloth, they have such a power of secretion, that they become instantly moist again. Indeed, it is scarcely possible to dry the surface while the fish is living." * Dr Hancock, Zool. Journ. No. XIV. p. 242 INTRODUCTION. 73 The senses among fishes may almost be said to be confined to three, — those of seeing, hearing, and smelling, all very acute. Those of taste and touch are to all appearance in subordinate development, nor with the powerful exercise of the others are they conducive, or necessary to the existence of the individual. There is a gene- ral sense of feeling by contact with any body over the surface of the animal ; but unless in those species which are furnished with long filamentous appendages to the head, there is no organ by which this property is regularly exer- cised. In those fish, when lying at the bottom in disturbed water, the filaments are extended, and may serve to make them aware of the approach of an enemy ; and among others, in the Siluri, where they are of great length, and are thrown out and moved, to attract attention ; from their sensibility of touch, while the fish remains in concealment, they may warn the lurker that his prey approaches, and enable him to prepare for its seizure. The sense of taste seems even developed in a less degree, the organ in which it is generally implanted being used as an accessary to prehen- sion, and often armed with very strong teeth. Swallowing also almost immediately follows the seizure ; the prey, gorged entire, and without mastication in the mouth, is rapidly dissolved and digested in the stomach. 74 INTRODUCTION. The important function of vision is imparted to fishes to a greater extent, and if perhaps the range of seeing be not great, when within its bounds it is apparently acute and distinct ; and as among the higher vertebrata we have some which are nocturnal in their habits, as well as those which seek their prey by day, so we find among fishes a difference of form in the large eyes of many species which constantly remain at a depth of many hundred fathoms below the surface, and where it has been proved that the influence of light could not extend. In some, again, the eyes are remarkable for their minuteness, and to several species the specific name Caca, or blind, has been applied. These, like the mole in her dark galleries, live in the banks of muddy rivers, and are no doubt furnished with some more exquisite sense to supply their wants, and minister to their sustenance. In the Gastrobranchus, a fish remarkable in all its structure, no trace what- ever of eyes has yet been discovered. Water, the medium through which fishes hear, has been proved to be a better conductor of sound than air ; and from a variety of experi- ments, sounds produced under water, have a loud and clear impression on the human ear, placed in the same situation. In fishes there is no external ear, except in a few where a very small cavity is discernible. They want the tympanum, the small bones, and the eustachian tubes ; but the semi- INTRODUCTION. 75 circular canals are often largely developed. In the osseous fishes, to a part of which this volume is more particularly devoted, the whole of the labyrinth of the ear projects into the cavity of the cranium. The labyrinth is filled with a trans- parent liquid, distending the vestibule and sack, which contain small and peculiar bony substances, two or three in number, which float in the liquid, and would apparently convey the sense of any concussion to the nervous linings of the edges, and upon the principal plexus of the auditory nerve, which is ramified in the greatest proportion on the walls of the sack, which generally contains the largest of these hard osseous bodies. The structure of the ears in fishes is certainly less per- fect and less complicated than in the higher mammalia and birds ; and Cuvier is of opinion, that though they hear sounds distinctly, or as concussions, yet they are unable to distinguish any of the finer tones or variations. That they are sensible of the impulses of sound has often been proved, and fish are known to approach for 'bod at the whistle of their keeper.* Smelling, again, appears to be even farther developed than what is generally supposed. The * The Romans were even said to have taught each to approach upon calling by a particular name. Fre- cynet, speaking of the Squafas melanopterus which the expedition met with at the Waigow Islands, says they 76 INTRODUCTION. nostrils, in general, appear externally like a double hole or opening, and the branches of the nerve are ramified on a sort of cushion at the bottom, or upon the side. The cut will shew the great proportion of nerve supplied from the brain to the nostrils. In a few, they are like prolonged tubes, as among the eels, where the multiplicity of nervous filaments is very great ; and in one fish they are remarkable as being placed on a sort of stalk like a mushroom, in which the openings are placed with the nervous distribution. Seeing, then, a certain extent of development, we cannot doubt that impressions of smell are conveyed. In proof, various per- fumes are successfully used by anglers to attract the fishes. Eels are led into traps by baits placed within, which they could only discover by smell ; appear to have a finer sense of hearing than of sight. When seen upon the coast, they would allow themselves to be approached, so long as silence was preserved, but on speaking, fled immediately. INTRODUCTION. 77 and during floods, or in muddy waters, where we know that vision is much impaired, scent only can bring fish to the bait, which, if employed for a continuance in one spot, will at length attract numbers. But Cuvier hints at this sense being even of service for a purpose of more delicacy — that of distinguishing the difference between waters of different streams or currents ; and it is probable, that, by the use of these organs, many of our migra- tory fresh water species are enabled again to dis- cover and return to the rivers they had previously frequented. Such seems the most common dis- tribution of the three most prevalent senses, Various, however, are the modifications of their application, corresponding with the manners and necessities of the individuals. The greater proportion of fishes are carni- vorous, and find an abundant and varied food in the immense profusion of moluscous animals, as well as in the smaller species of their own orders, for among them may be said to exist a constant system of attack and defence — a general war, the stronger against the weaker. A few only subsist on vegetables, " and graze the sea weed, their pasture." The teeth, the only organs almost of prehension, are therefore varied in innumerable forms, but are chiefly adapted either for tearing or bruising. In the cartilaginous fish, we find these forms strongly developed ; those of the 78 INTRODUCTION. sharks will exhibit an example of the first, of the most formidable kind, of great size and strength, smooth and piercing, or sharp, but serrated. Those of the rays or skates of the second, fitted for bruising, where the food is in a great part shell fish, and where the teeth are arranged as a dense pavement In others, again, the teeth, various in size and strength, are placed in the jaws, vomer, tongue, arches of the branchiae, and in the throat. The latter arrangement is one of the most singular, and bears the title among French ichthyologists of " Dents en velour," from their exhibiting the appearance, to the naked eye, of the pile of coarse velvet. These act by the compression of the lower pharyngeal muscles, and an example will be found in the genus Cyprinus, to which belong the greater part of those fishes which, by English anglers, are denominated " Leather Mouths/' The food being seized, is almost immediately swallow- ed ; and, such is its voracity, that substances entirely foreign are often taken in, as may almost always be seen on examining the stomach of a cod, which sometimes presents a most heterogeneous mass, little fitted for nutrition. Although the teeth and jaws, with pursuit, are the principal accessaries for securing prey, various fishes, deprived of swiftness, entice their prey by stratagem. Such are all the Siluri, with long fila- mentous appendages to the lips, which, in some, are INTRODUCTION. 79 said to possess the property of stinging. Others, again, lurk in concealment, and dart out upon the casual passers by. The Rostrated Chaetodon em- ploys a most singular property of propelling a drop of water with unerring aim and considerable force at insects which have settled on aquatic plants, seizing them on their fall into the water. But of all the properties with which these singular creatures are endowed, either for attack or defence, that of the benumbing and electric stroke of the Torpedo and Gymnotus is the most remarkable. Experiments have tended to confirm its connection with the galvanic mnuence. Many an assailant must be most un- expectedly stopped by it ; and the fishes whicn are endowed with it being, in general, of slow motion, lurk until their victims approach within the influence of their deadly and peculiar power. The fishes which possess this power are but few in number. Among the most noted are the Torpedo known to the ancients, and the electric Gymnotus. In the first, which in outward appearance somewhat resembles a skate, and has nearly the same habits, the electric organs are placed on each side of the cranium and gills, reaching from thence to the semicircular carti- lages of each great fin, and extending longi- tudinally from the anterior extremity of the 80 INTRODUCTION. animal to the transverse cartilage which divides the thorax from the abdomen, and within these limits they occupy the whole space between the skin of the upper and under surface. Each organ consists wholly of perpendicular columns, reaching from the upper to the under surface, and varying in their lengths according to the thickness of the parts of the body where they are placed. Their coats are very thin and transparent, closely con- nected with each other by a kind of loose network of tendinous fibres. The number of columns vary in specimens according to size. John Hunter found about four hundred and seventy in each organ ; but in one of large size, so many as one thousand one hundred and eighty-two were counted ; and the whole are supplied with a very ample plexus of nerves.* The Torpedo being the fish first known which possessed this property, had the fame of the immense benumbing power which it could exert spread abroad. Experiments have proved, how- ever, that the shocks could be withstood with impunity, and that some other fishes possessed it to a much greater extent. It can be communi- cated through the water without contact ; and is undoubtedly used in striking the prey which it • J. Hunter's Phil. Tram. INTRODUCTION. 81 is unable to overtake from its unwieldiness. Leoman mentions, that a duck, confined to a bucket of water containing a live torpedo, was, after some hours, found dead. Several species are known ; four are found in the Mediterranean. The electric Gymnotus, recorded by Hum- boldt, is a much more formidable creature, as we learn from the interesting account of that tra- veller. He found them in the Rio Colorado, and several other streams which cross the missions of the Chayma Indians. The natives frequently feel the electrical shocks when bathing in the waters, and every amphibious animal seems to have an intuitive fear in approaching the pools which they inhabit ; the alligator is stunned before he can wound them ; and it was even necessary to change the direction of a road near Urituca, because these electrical eels were so numerous in one river that they every year killed a great num- ber of mules of burden as they forded the water. The manner in which the Baron procured specimens for examination is a curious instance of their power. It was necessary to procure them without injury; and, after resorting to different expedients, " the Indians told us they would fish with horses. We found it difficult to form an idea of this extra- ordinary manner of fishing ; but we soon saw our guides return from the Savannah, which they had been scouring for wild horses and mules. They 82 INTRODUCTION. brought about thirty with them, which they forced to enter the pool. " The extraordinary noise caused by the horses' hoofs makes the fish issue from the sand, and incites them to combat. These yellowish and livid eels, resembling large aquatic serpents, swim on the surface of the water, and crowd under the bellies of the horses and mules. A con- test between animals of so different organization furnishes a very striking spectacle. The Indians, provided with harpoons, and long slender reeds, surround the pool closely, and some climb upon the trees, the branches of which extend horizon- tally over the surface of the water. By their wild cries, and length of their reeds, they prevent the horses from running away, and reaching the bank of the pool. The eels, stunned by the noise, defend themselves by repeated discharges of their electric batteries. During a long time they seem to prove victorious. Several horses sink beneath the violence of their invisible strokes, which they receive on all sides, in organs the most essential to life ; and, stunned by the force and frequency of the blows, disappear under water. Others, panting, with mane erect, and haggard eyes, ex- pressing anguish, rouse themselves, and endeavour to flee from the storm by which they are over- taken. They are driven back by the Indians into the middle of the water ; but a small number INTRODUCTION. 83 succeed in eluding the active vigilance of the fishermen. These regain the shore, stumbling at every step, and stretch themselves on the sand, exhausted with fatigue, and their limbs benumbed by the electric strokes of the Gymnoti. " In less than five minutes two horses were drowned. The eel being five feet long, and pres- sing itself against the belly of the horses, makes a discharge along the whole extent of its electric organ. It attacks at once the heart, the intes- tines, and the plexus of abdominal nerves. We had little doubt the fishing would terminate by killing successively all the animals engaged; but, by degrees, the impetuosity of this unequal contest diminished, and the wearied Gymnoti dispersed. They require a long rest, and abundant nourish- ment, to repair what they have lost of galvanic force 1 and, in a few minutes, we had five large eels, the greater part of which were only slightly wounded."* The reproduction and migration of fish is an- other part of their history full of interest. They are, with a few exceptions, oviparous, and are fruitful to a most surprising degree — so much so, that if the whole ova were to be matured, bounds could not be assigned to them, and the expanse of the waters would be crammed; but among * Humboldt's Pers, Narr iv. 349. 84 INTRODUCTION. the millions of ova which are deposited, those hatched to maturity will not exceed one in the thousand, perhaps a much less proportion, and in their great fertility we see both a beneficent de- sign in furnishing an ample supply of food for many of the inhabitants of the same element, and for the numerous tribes of waterfowl which, at some seasons, feed entirely on the eggs and fry ; while, on the other hand, without this abundant power of generation, a stock could not be saved from the numerous enemies of sea and air to which they are nearly constantly exposed. In general, the eggs are deposited in water comparatively shallow, upon rocks, on gravelly or sandy banks, on aquatic plants, or marine algae, or in holes formed in the banks or borders of the lakes or rivers ; and to the strong instinctive principle which impells these creatures to seek suitable situations for the deposition of their spawn, do we owe the abundant supply of fish which annually resort to our shores. The migration of the herring, mackerel, pilchard, &c. all depend on this, and the countless shoals which arrive, only leave the great recesses of the deep to seek the shallower bays and estuaries for the purpose of continuing their species. There is one circumstance in the breeding of fishes which requires notice — that of no care being bestowed on the ova, or young, after a INTRODUCTION. 85 place has been selected and finished for the depo- sition, or after they are hatched. There seems, however, here also to be exceptions. " The Col- tichthys littoralis makes a regular nest of long leaves, or grass, in which they lay their eggs in a flattened cluster, and cover them over most care- fully. They remain by the side of the nest till the spawn is hatched, with as much solicitude as a hen guards her eggs, both male and female, for they are monogamous, steadily watching the spawn, and courageously attacking any assailant. Hence the negroes frequently take them by putting their hands into the water, close to the nest, on agitating which, the male springs furi- ously at them, and is thus captured." * In their economical uses to man, fish are princi- pally important as an article of food, and from the employment they afford to the more depen- dent classes ; but oil is the commodity greatest in value and quantity produced from them. The quantity of fish killed for these purposes is truly immense. Fifty thousand salmon are said to have been taken in the Tay during one year, and five hundred thousand cod, on the New- foundland bank, by a single vessel, in a week. What then will be the aggregate of the creatures in this department of zoology which are yearly * Dr Hancock, ZooL Journ. XIV. p. 244. 86 INTRODUCTION. consumed in our commerce ? Isinglass is made from the swimming bladders ; glue from the coarser refuse of fins, &c. ; artificial pearls from the scales, — and Pennant tells us that a certain French artist used thirty hampers full of the latter for this manufacture in one year. Shagreen from the skins of the carttaginous fishes, saucos from their roe, &c. may be mentioned as some of the more subordinate purposes to which they are applied. In the arrangement of the present volume, we have preferred following the system of Cuvier. Its two leading divisions depend on the compo- sition of the skeleton, with, however, some changes from any former arrangement. The next subor- dinate separation depends on the structure of the fin's rays ; but the following shoit table will give an idea better than any exposition of our own. POISSONS. Osseux. A branchies en, peignes, on eft lames. A. macholre svpericure libre. ACANTHROPTE RYGIENS. Percoides. Polynfcraes. W-illes. Joues cuirassees. Scienoides. Sparo'ide*. INTRODUCTION. 57 Chetodonoideg. Scombroides. Muges. Branchies labyrinthiquea. Lophioides. Gobioides. Labroides. MALACOPTERYGIEN3. Abdominaux. Cyprinoides. Siluroides. Salmonoides. Cluseoides. Lucioides. Subbrachiens. Gadoides. Pleuronectes. Discoboles. Apodes. Murenoides. A mdchoire superieure fixee. Selerodermes. Gymnodontes. A branchies en forme de houppes. I .opobranches. CARTILAGINEUX ou CHONDEROTERVGIENS, Sturiones. r'iagiostomes. Cyclostomes. Pursuing farther the system of the Baron, wa shall commence our descriptive part with the characters of his first great family, the percoid 88 INTRODUCTION. fishes. Typical of this, the common perch has been taken, but, in considering its form, allowance must be made for the various modifications it will receive in the very numerous species which occupy this section ; in the whole, however, the resemblance is beautifully kept up. The principal characters of the family are stated thus : — " The body oblong, more or less compressed, covered with scales generally hard, and of which the outer surface is more or less rough, the edges toothed or ciliated ; an opercle and preopercle, variously armed or toothed ; the mouth large ; gill covers deeply cleft, the membrane supported by rays, whose number is never below five, and rarely exceeds seven ; teeth not only in the jaws, but in a transverse line before the vomer, and almost always in a longitudinal band on each palatine bone ; fins at least seven in number, often eight ; stomach a sack, pylorus lateral, appendages never wanting, but often small and limited in number. The external colours are often beautiful ; the flesh in general well flavoured and wholesome." In the sectional divisions of the family, the leading distinctions are taken from the division of the dorsal fin, the situation of the ventral fins, and the form of the teeth, but for the sake of perspicuity, we add the table of the genera. INTRODUCTION. 89 I. — Ventral fins situated under the pectorals. Ventrals with five soft rays. Gills with seven rays. With two dorsal fins, or with the first hollowed at its base. Teeth all fine. (Dents en velour. ) 1. Perca. 2. Lates. 3. Enoplossus. , 4. Diplorion. 5. Labrax. 6. Centropomus. 7. Graministes. 8. Aspro. 9. Ambassis. 10. Apogon. The canine teeth mingled with the others 1. Cheilodipterus. 2. Lucioperca. 3. Etelis. With a single dorsal fin. Canine teeth mingled with the others. 1. Serranus. 2. Merous. 3. 4. Plectroooma. 5. Diacope. 6. Mesoprion. Teeth all fine. (Dents en veiour. 1. Centropristes. 2. Grystes. 3. Polyprion. 4. Pentaceros. 5. Acerina. 6. Rypticus. Less than seven rays to the gills. Canine teeth mingled with others. 1. Cirrhites. 90 INTRODUCTION. Canine teeth none. 1. Pomotes. 2. Centrarchus. 3. Trichodon. 4. Priacanthus. 5. Dules. 6. Therapon. 7. Pelatea. 8. Helotes. Ventral fins with raore than five toft rays. Gills with more than seven rays. 1. Myripristes. 2. Holocentrum. 3. Beryx. [I — Ventral fins situated before thepectoiah* Teeth all fine. (Dents en velour. ) 1. Uranoscopus. 2. Trachinus. 3. Percis. 4. Pinginpes. Canine teeth mixed with others 1. Percophis. III. — Ventral fins situated behind the pefto^U. With canine teeth. I. Snhvraena. Teeth fine. (Dents en velour. * 1. Polynemui. 91 GENUS PERCA — PERCH. THE genus Perca, first and typical of the family, is familiarly known in the form of the Common Perch. The characters, after finding its place in the table, taken from the form and situation of the fins, may be shortly stated: — " Preopercle, toothed ; opercle, spined ; suborbitary bones, delicately toothed ; tongue free. The dorsal fins are very powerful, the spines strong and sharp. The scaling moderately large, and with the posterior edge toothed. Swimming bladder very large. Number of vertebrae in the common species, forty-two/' They are all inhabitants of the fresh waters, delighting in lakes and still running streams. Feed on marine insects and small fish. The colours are often brilliant, dis- posed in bands on the body, or distributed in vivid tints on the fins, which contrast with the more sombre shades. They inhabit Europe, India, North America, and a single species is mentioned, from the drawings of Banks, to be found in New Zealand. The sea-like lakes of America, and the sluggish parts of her vast rivers, afford the most numerous species; and to illustrate the genus we nave chosen one 92 THE GRANULATED PERCH. Perca yranulata. — Cuv. et VAL. PLATE I. La Perch a Tete Grenue. — Perca granulata, Cuv, et Valen. Hist. Nat. des Poissons, ii. 48. D. 15-2.13; A. 2.8; C. 17; P. 15; V. 1.5.* THE Granulated Perch inhabits the rivers which flow from the Blue Mountains towards the Atlantic Ocean, and, with two others from the same country, is so similar to that of Europe, as to have been confounded with it, and to have assisted in the idea that the latter was also found in the New World. It indeed approaches very closely by the bands on the sides, and the red colour of the lower fins ; and the distinctions pointed out by Cuvier are the stronger teeth upon the vomer, the more delicate indentations of the preopercle, and the more irregular form of the cranium. The second dorsal fin has one ray more than that of the common perch, that of the first being 2.13. the latter, 1.13. * The rays of the fins will be stated, as above, at the commencement of each species, — the letters signifying Dorsal, Anal, Caudal, Pectoral, and Ventral. COMMON PERCH. 93 A species from Java is named P. ciliata, from the deeper cutting in or ciliation of the scales. Another, from Cook's Straits, differs from its congeners in being spotted on the sides, above and below the lateral line, with reddish golden coloured spots. The body of a lengthened form, silvery, the back with green and bluish bands nearly to the lateral line. It was found to be a fish of great delicacy of flavour; and, from its resemblance to a trout in spotting and taste, was named by Forster Sciena trutta.* Cuvier has now placed it at the extremity of his genus Perca. The Common Perch (see Plate XXXV.), how- ever, still continues the species which is most ac- curately known, and, among the fishes which are used in the economy of man, was the one which was perhaps most extensively and anciently used. It was known to the Greeks and Komans, and was celebrated for its beauty and delicacy, in the latter quality being thought worthy of contesting the palm with the far famed Mullet. In distri- bution, it is extensively spread over the lakes and rivers of Europe and a part of Asia; it extends to Italy, to European and Asiatic Russia, and is found in the rivers which flow into the Baltic and Black Sea. To Great Britain it is thought to have been introduced, and is now an abundant and well * See detailed description, Schneider, 542, Addenda, !)4 COMMON PERCH. known fish in the southern lakes and rivers. It reaches to the north perhaps not farther than some lochs in Ross-shire, and to them it has most pro- bably at some period been transported. In the shape of the Perch, we find that combi- nation of length, depth, and thickness, which will give the easiest support in, and the least resistance when passing through the water. While the fins possess great power, the swimming or air-bladder is of great size, and the scaling or outward covering is compact, hard, and not awkwardly large. In colouring it is extremely beautiful, the upper parts of a rich olive green, shading into golden yellow ; the body banded with distinct bars of a deeper tint ; and the whole relieved by the deep velvety black of the posterior part of the dorsal fin, and the brilliant vermilion of the ventral and anal fins. For defence, the strong spines of the aorsal fin, which are erected and held fixed with extraordinary muscular power upon the appear- ance of any danger, are admirably fitted, and it is one of the few fishes which is able to frequent waters in common with the Pike. A variety of the Perch is mentioned by M. Jurine, where all the colours are of a paler tint ; the fins of a pale yellow, without any of their usual brilliant ver- milion. Another, which Cuvier thinks may even- tually resolve itself into a variety, is the fish which he has given under the title of Perca COMMON PERCH. 95 Italica — found in certain cantons of Italy, and, in particular seasons, seen in the Boulogne markets. It is without the dark side bands, but differs also slightly in some of the proportions of the head and fins. The Wales variety, mentioned by Pennant, consists in the hunched form of the back, and the distorted form of the back-bone next the tail, which appears first pinched in, and again expands. As an article of food or luxury, we cannot agree with its celebrator, Ausonius, in its excel- lency over our other fresh water fishes. When of average size, it affords a fine variety for the table, but will be surpassed in delicacy by either the Trout or Salmon. The skins are used by the Laplanders, cooked into a kind of jelly, and for making glue ; and in the village of Lisse, on the Haarlem-mere, celebrated dishes are prepared from their milts ; while of their scales, whitened and cleaned, many pretty ornaments have been lately made. The general habitat of the Perch in Britain is in lakes, and streams not too rapid. They delight in a clear bottom with grassy margin, or in rivers overhung with brush, and widening into some beautiful lake-like expanse. Here they roam in shoals, descending and rising, seeking their food, and shading themselves Irom the too great heat among the reeds or foliage. They are rather a 96 LABRAX. stupid fish, and are easily taken with the rod at various baits — the most successful of which is, however, a Minnow. In streams where they have grown large, they afford tolerable sport ; and, from the shoal feeding in company, many may be taken when it is once discovered. The average size may be stated at from one pound to a pound and a half. Those of three and four pounds are, however, tolerably common ; but the one men- tioned by Pennant, to have been taken in the Serpentine river, of nine pounds, appears to be still the largest upon record.* In some of the Highland lochs, particularly those of Perthshire, they are remarkably fine and abundant. Pallas gave the title of Labrax to a race of fishes found in the sea of Kamtschatka, remark- able in having several lateral lines or rows of pores upon the sides ; but Cuvier, thinking the name inapplicable to a fish which was not known to the ancients, has applied it as a subgeneric title in his own arrangement, to the Perca labrax of Linnaeus. This explanation is necessary, lest the present sub-- genus should be confounded with that of Pallas, * Bloch mentions one taken in Siberia, of which the head alone measured eleven inches in length, and was kept as a curiosity. The weight must have much exceeded those above mentioned. LABRAX. 97 and it will remain optional with systematists to retain it here, or in its former place. It differs from Perca, in having scales upon the opercles, absence of teeth on the subopercles, inter-opercles, and suborbitary bones, by the double spine upon the opercles, and by the very small close set teeth which cover the greater part of the tongue. The most common species is 98 THE BASSE, OR SEA PERCH Labrax lupus Cuv. PLATE II. Perca labrax, Linrueus. Bar commun, Labrax lupus, Cuv. et Valen. Hist. Nat. des Poissons, i. 56. — The Basse, Pennant. — Donovan, plate xliii. B. 7; D. 9—1.12; A. 3.11 ; C. 17 j P. 16 j V. 1.5. THIS fish, by most writers on the British species, is said to be tolerably common on the coasts of the south of England during the summer, while, on the Dutch side, there are established fisheries of it. It was well known to the ancients, and is mentioned by many of their poets. It was celebrated as well for the excellency of its flavour, as for the stratagems it used when encircled by nets, or fastened by the hook. Its general length is from ten to eighteen and twenty inches, though it is said to grow much larger. The specimen, however, mentioned by Duhamel, as thirty pounds in weight, Cuvier thinks he must have mistaken for some other fish, but seems to have less doubt of those which have been recorded of fifteen and twenty pounds in weight, having received one from Abbeville three feet in length. The form THE BASSE, OR SEA PERCH. 99 of the Basse is of considerable elegance, arid the colours are chaste and pleasing, without any of the striking contrasts we have in the true Perches. The upper parts are gray, with bluish reflections, which gradually shade into a silvery white on the lower parts ; the fins are gray, the pectoral ones slightly tinged with reddish. At some periods they appear to be marked with spots or clouds, wnicn was attributed to be the colouring of the young only ; Cuvier, however, found very small specimens perfectly unspotted, while some o*' the larger were the reverse, and he is more in- clined, from his observations, to consider it a sexual difference. The extra European species amount to only four or five : to them belong the Rock-fish, or Striped Basse of the Americans — Labrax lineatus, Cuvier — abundant in the vicinity of New York, where it is much esteemed, and brought to the markets of a weight reaching sixty and seventy pounds. They ascend the rivers in the spring to spawn, and are then taken in immense numbers with the hook. Another species was discovered in the bay of Offack in the island of Waigiow, by Lesson and Garnot, the naturalists to the expedition of Duperry. It is of small size, of a golden green, with brownish lines. Another species inhabits the Japanese seas. The next sub-genus of Cuvier is very closely 100 LATES. allied to this. The sub-orbitary bone only is toothed ; the preopercle has a spine at the angle, and very strong teeth upon the lower surface. The first dorsal fin is higher and shorter than in Perca labrax, and the tongue is free as in the Perch. They are in general a wholesome fish, af a large size, and inhabit the rivers of the warmer parts of the old continent. Lates, now adopted for the genus, was the ancient name given to some of the species. That which we shall notice is, UNIVERS 101 THE LATES OF THE NILE. Lates Nilotieas — Cuv. et VAL. PLATE III. Perca Niliotica, Linnaus. — Le variole du Nil, Late? Niloticus, Cuv. et Valen. Hist Nat. des Poissons, ii. p. ; 89. Keschr, or Keschere, of the Arabs. B.7; D.7or8-U2; A.a8or9; C. 17; P. 15j V. 1.5. THIS fine fish appears to have been known to many of the ancient writers, who agree, generally, in giving it a very large size, so far as three hundred pounds weight; this, however, is un- known at the present time, and species of a much less size are only seen. It is also universally acknowledged as one of the most delicate and best flavoured fishes of the Nile. The Lates of the Nile approaches Labrax in the absence of spines on the sub and inter-opercles, but it resembles the Perch by the single spine on the opercle, and the teeth on its sub-orbitary bone. The form, however, approaches nearest to the Perch. There are also four or five strong spines upon the super scapular bone, and five still stronger on the angle of the humerus above the pectoral fin 5 but these teeth or spines become 10*2 THE LATES OF THE NILE. effaced in the old and large species, and in those of three feet long, are scarcely perceptible. The spines of the dorsal fin are remarkably strong, particularly the third ; those of the dorsal fin are very rigid, and with the tail and other fins are of considerable power. The scaling is rather large, and rough on the edges. The lateral line seems nearly parallel with the back, at about one third of the depth, and on each scale there is a narrow and slender tube. The whole fish is of a silvery tint, tinged with olive brown on the upper parts and fins. Another fish which Cuvier places in this sub-genus is, the " Cock tip" of the English at Calcutta, the Caius vacti of Hamilton Buchanan, and the Latex nobilis of our author. It is one of the lightest and most esteemed foods brought to table in Calcutta. The Vacti abounds in all the mouths of the Ganges, which it ascends as far as the tide, and follows this into the marshes, ditches, and ponds ; but those found in salt water are of by far the best quality, as are those about two feet in length. It is often caught five feet long ; but when it approaches this size the taste becomes strong, and when small, it is rather insipid. The upper parts are of a green colour, with a gloss of gold and purple ; the lower parts are silvery.* * Bam. Buchanan, Gaagetic Fishes, p. 87. 103 ELEVEN-SPINED CENTROPOME. Centropomus undecimalis. — LACEP. PLATE IV. Centropome undecimal, Lacepede Sciena undecimalis, Block, 305, Auct. Cuv. — Le Centropome brochet de mer, Centropomus undecimalis, Cuv. et Valen. Hist. Nat. des Poissons, ii. p. 102. B. 7j D. 8-1.10 j A. 3.6; C. 17; P. 15 j V. 1.5. LACEPEDE formed the present sub-genus for the reception of the subject of the accompanying plate, the principal distinctions of which are taken from the gill covers, and is named from having eleven spines in the last dorsal fin. It is abundant, and forms a large article of consumption in most parts of South America, in the French, Spanish, and Portuguese colonies; at Rio de Janeiro, Lima, and Cuba. It frequents the mouths of rivers, and even runs so far up as in some parts to be counted a fresh water species. It is every where much esteemed, appearing at the tables of the most opulent. It reaches a weight of above twenty-five pounds, and in the markets is sold in cuts or pieces, like many of the larger fish in this country. A kind of caviar is made from the roes. 104 ELEVEN-SPINED CENTROPOME. From the flattened muzzle and general form of this fish there is some resemblance to the Pike, under which name, with the addition of " sea," it is in some places known. The head is narrow, and when viewed from the side, it appears still more lengthened, from the elongation of the lower jaw, which considerably exceeds that of the upper. The cheeks, opercles, and sub-opercles, are covered with scales. The dorsal fins are triangu- lar, and separated by a larger space than we have yet seen, being in reality distinct. The first has eight, the second eleven rays. The scales are nearly round, rough upon the edges. The lateral line undulates a little near the centre of the fish, is very conspicuous, and forms a black line running the whole length of the body; it is formed by a wide and short tube pierced in each scale. The colour of the fish is silvery, tinted with brown, or greenish on the upper parts, and re- lieved by the deep tint of the lateral line. The first dorsal fin is gray, the others yellowish, finely dotted with black on their edges. The next sub-genus has been named by Cuvier Lucioperca, or Pike-perch, from the combination which its type exhibits of the characters of the two fish. It possesses the fins and banding of the latter, with the elongated form of the head and body, and the sharp long teeth of the Pike. The best known species is ' TfMtf" ' THE COMMON PIKE-PERCH. Lucioperca sandra. — Cuv. et VAL. PLATE V. Perca lucioperca, Slock — Le Sandre commun Lucio- perca sandra, Cuv. et Valen. Hist. Nat. des Poissons, ii. p. 110. D. 14-1.22; A. 2.11 ; C. 17; P. 15; V. 1.5. THIS handsome fish inhabits the rivers and lakes of the north and east of Europe, but, according to Cuvier, is unknown in Italy, France, or Britain. It is taken in the Danube, the Elbe, and the Oder ; in the Baltic, Caspian, and Black Seas, the Sea of Asoph, and is very abundant in the Volga. In this great European range, and notwithstanding its excellence as food, it appears to have been unknown to the ancients ; at least none of our most skilful ichthyologists have been able to trace its presence as an article of luxury or necessity at their entertainments. It is a fish of rapid growth, and attains a length of three to four feet, and a weight of twenty pounds. Its flesh is of an agreeable taste, rich, and, when cooked, remarkably white. It is often salted and smoked, and quantities prepared in these ways are exported from both Prussia and Silesia. It 106 COMMON PIKE-PERCH. is extremely prolific, three hundred thousand ova, of about a size equal to a grain of mustard, occa- sionally forming the roe of a single fish. It is, at the same time, a much more tender fish than the Perch, and will not bear carriage in the same way; and it is this which, Cuvier thinks, has hitherto prevented its introduction into France, where there is no remarkable difference in climate from the countries in which it is so abundant. Would it not be possible to introduce it to some of the British waters? The general colours of this fish, though less gaudy than those of the Perch, are chaste and simple ; the back and upper parts are of a greenish gray, changing, on the sides and belly, to silvery white. In the old fish, the upper parts have dark clouded spots, but which, in the young, take the form of vertical bands. The dorsal fins are gray, and have black spots between the rays, which are so distributed as to form bands across. In the young, thes2 spots are more clouded, and are also sparingly scattered over the head and tail. The other fins are greenish gray, in some individuals tinted with yellow. The teeth are in general pmall, but thick and close set ; two on the upper jaw, four on the lower, and two on the fore part of each palatine bone, are of a larger and more lormidable size. The internal structure of this ti.ih nearly resembles that of the Perch. AMERICAN PIKE-PERCH. 107 Cuvier enumerates two additional Russian species, which seem first to have been noticed by Pallas. The one, from the Volga, has received the specific appellation of Volgensis, and rests on the authority of Pallas alone, Cuvier not having seen a specimen. The other, L. marina, Cuvier and Valenciennes, found in the Black Sea, pos- sesses a flesh firm, white, and of great delicacy. This, as a species, seems also yet imperfectly known. America possesses another of a greenish yellow, or spotted over with blackish, and is the Lucioperca Americana, Cuvier. 108 THE BLACK BASS OF THE HURON. Huro nigricans. — Cuv. et VAL. PLATE VI. Le Huron, Huro nigricans, Cuv. et Valen. Hist. Nat. des Poissons, ii. p. 124. IN the arrangement which Cuvier has proposed, some fishes were occasionally met with which could not enter into the genera already formed, while they evidently were closely allied to them ; his plan here seems to have been to arrange them at the termination of those of whose situation he had no doubt; and such is the case with four curious species which occupy as many of our fol- lowing plates. The first is the Black Bass, or Black Perch of the English residents on the banks of the Huron. Its flesh is firm and white, and it is much esteemed during summer. The upper parts of the fish are of an olive brown, changing into yellowish white on the belly, and along the central ridge of each scale is a line of the same colour with the upper parts, giving it a striped appear- ance on the sides. The body is rather deep in proportion, the under jaw slightly projects, and the head, cheeks, and opercles are scaled. The teeth are nearly similar to those of the Perch. THE BLACK BAPS OF THE HURON. 109 The first dorsal is much less, contains only six rays, and is placed at a considerable distance in front of the second. The anal fin is again considerably larger in proportion, and has three spiny, with eleven soft rays. The others are nearly similar to those of the Perch. Cuvier*s specimen was sixteen inches in length ; and although the fish is esteemed, and seems abundant in its native country, little is yet known regarding it. Our next fish is one of great beauty— it is THE RUBY-COLOURED ETELIS. Etelis carbunculus. — Cuv. et VAL. PLATE VII. JL'eielis, Cuv. et Vakn. Hist. Nat. des Poissons, ii. p. 12? B. 7; D. 9— 1.11; A. 3.8; C. 17; P. 16; V 1.8. THIS genus is also formed from a single specimen, taken by M. Desumier near the Sechelle Islands, and from the beauty of its colouring, which Cuvier compares with the tints of the ruby, has received the specific name of Carbunculus. It differs from the Perches in possessing strong and long teeth, by which it approaches to the structure of Lucio- perca, but other parts of the teething here also differ ; the opercle is terminated by two spines. The eye of this splendid fish is a conspicuous object, and is of a golden orange. The scaling is large and marked, and the whole ground colour of the fish is bright ruby red, relieved by stripes of golden yellow, which run along the ridges of the scales. The length of M. Desumier's speci- men was about eleven inches. $&v£ UNIVERSITY Ill THE SPINED NIPHON, JV./.k4» spinosus — Cuv. et VAL. PLATE Vir. Le Niphon, Cuv. et Valen. Hist. Nat. des Potssons. D. 12—1.11 ; A. 3.7 j C. 17 j P. 16 j V. 1.5. INHABITS the Japanese seas, and is remarkable for the strong and formidable knife-like spines with which the opercles are armed ; indeed, the whole head is sawed and spined in a singular manner. The sub-orbitary bone has the lower edges like a fine saw ; the preopercle is sawed on its posterior edge, and strongly toothed below ; while at the angle is a large and strong dagger- formed spine, exceeding in length the edge of the opercle. Upon the opercle itself three spines rise edgeways from the surface. The super-scapulary bone has two teeth, and the humerus above the pectoral fin is furnished with a flat spine. The first dorsal fin, the ventral, and anal fins, are also all strongly spined, and com- plete the array of this well defended species. The upper parts are of a pale brown colour, the lower parts silvery, the dark shade of the upper part is divided, in a line from the eye backwards, 112 THE SPINED NIPHON. by a pale longitudinal band. The upper fins are grayish, the last dorsal fin with a blackish spot on the fore part. The others are of a yellowish white, and the tail is blackisn at its two angles, with a central paler line. In length, the single specimen, whence the description was taken, was about eight inches. Enopiossus armatus — LACEP. PLATE IX. Long spined Chaetodon, Chsetodon armatus. White's Voyage to New South Wales, App. p. 254 — Enopiossus, Laeepede — L'Enoplose, Cuv. et Valen. Hist. Nat. das Poissons, ii. p. 133. B. 7; D. 7—1.14, or 1.15; A. 3.15; C. 17; P. 12; V. 1.15. THIS, with the next fish, are very remarkable in their forms as coming into the present family. At first sight they appear to be something quite different, but, on examination, the characters of the percoid fishes are very evident. The fish represented on Plate IX, so much resembles a Chsetodon in form, (being nearly as deep as long,) that it has been placed with them, and the dark banded markings and lengthened rays of the fins bring it even nearer in resemblance ; but the teeth, the want of the scaling at the base of the fins, and the internal structure of all parts, differ. The colouring is chaste, but distinct and well marked, the ground shade entirely of a silvery gray, palest on the belly, and relieved by eight narrow black bands, which either entirely or in, H 114 THE ARMED ENOPLOSSUS. part surround the body. The fins hav« a yel- lowish appearance, except the ventrals, which are blackish, of which colour, or rather of a deep gray, are the membranes between the spines and rays of all the fins. It is abundant in the New Holland seas, but appears to reach no great size, eight or ten inches in length being the greatest which have yet been seen* TWO BANDED DIPLOPRION. Diploprion bifasciatum. — KUHL. et VON HASSELT. PLATE X. Le Diploprion, Cuv. et Valen. Hist. Nat. des Poissons, i. 137. B7; D. 8-15; A. 2.12 ; C. 17; P. 17; V. 1.6. THIS singular looking fish was discovered on the coast of Java. The body is compressed, the "head very large, and nearly the depth of the body, from whence the shape tapers towards the tail. The opercle is armed with three strong spines, and the preopercle has the edges toothed and serrated. The first dorsal fin is large and powerful, and contains eight very strong rays. In the other fins nothing remarkable is seen except in the ventrals, whose first and second rays are long, and extend beyond the commence- ment of the anal fin. The scaling is very minute. The colours are a fine reddish yellow, relieved by two crossing bands of black, the one through the eye, the other from the termination of the first dorsal fin, obliquely, to the anal ; the first 116 TWO BANKET DIPLOPRION. dorsal fin is brownish black. This fish is only known of about six inches in length. The next genus contains numerous species. That we have to notice, is UNIVERSITY 117 THE MEDITERRANEAN APOGON. Apogon rex Mullorum. — Cuv. et VAL. PLATE XI. Apogon commun, vulgairment Roi des Rougets, Cuv. et Valen. Hist. Nat. des Poissons, ii. p. 143. D. 6-1.9; A. 2.8; C. 19; P. 10; V. 1.5. APOGON is a title established by Lacepede for this fish, from the connection which he supposed it bore with the true Mullets, but from which Cuvier is of opinion it is considerably removed. The members of the subgenus are distinguished from any we have yet seen by the largeness of their scales, which, in reality, resemble those of the Cyprini. They, however, come very easily off, like those of the Mullets. The dorsal fins are far separated. The preopercle has a double edge, finely toothed. In the internal structure they bear a greater resemblance to the Perches than to the Mullets. The Common Mediterranean Apogon has been subject to much confusion of synonymy, which M. Cuvier has entered into at length in his history, but which it is unnecessary to introduce here. It is the only species found in the Mediterranean, and is taken at Marseilles, Nice, Ivica, Naples, 118 THE MEDITERRANEAN APOGON. Palermo, and Malta, during the spawning season, in June, July, and August, when it approaches the shores. At other times, like similar migratory fish, it most probably withdraws to the deeper recesses of the ocean. It is much esteemed at table. This little fish scarcely exceeds six inches in length. Its body is short, moderately compressed, somewhat swollen in the centre. The preopercle has its edge finely serrated; but the peculiar character in these fish is the double edge, or kind of second ridge, which rises on the preopercle, and of which a slight trace was observable in the Centropomus undecimalis of Plate IV. On the opercle there is a small spine on the posterior edge. The colours of this gaudy little fish are in general a crimson red, paler on the lower parts, and relieved by three deep black markings, one at the base of each dorsal fin, and a third about midway between the last and the insertion of the tail. The tint of the general colour is sometimes of a much yellower hue, according to the season, sometimes almost yellow ; and there is little doubt that the brilliancy is much heightened at the time when the spawn is near its perfection. The whole surface is scattered over with small black spots or dots, most conspicuous on the THE MEDITERRANEAN APOGON. 119 cheek and gill covers.* The dorsal fins are separated, though by a less space than those of the Mullets ; the first narrow, and with strong spines. The others nearly resemble those of the Perch, The foreign species seem mostly confined to the Indian seas, and none have yet been found in those belonging to America or Africa. A few have been met with in the New Holland seas, New Guinea, &c. particularly in the late voyages under M. Frecynet Many of these fish are of brilliant colours, principally red and yellow ; but even the more sombre marked have some decided contrast in dark coloured bands or spots, or in some markings of the fins. They all appear to be of small size ; the largest which is known being only about seven inches in length. The Apogon trimaculatus of Lesson and Garnot is of a golden red, relieved by three black marks, placed on the dorsal fins, and on the tail. Others, again, have the dark markings in longitudinal stripes ; such is the Apogon quadrifaciatus of a silvery red, with two dark brown bands on each side of the back ; another, from the Isle of Guam, is striped with nine black bands, whence it has the name of Apogon novemfaciatus. * This minute spotting is not represented in the copj of our plate. 120 ARABIAN CHEILODIPTERUS. Cheilodipterus Arabicus, Cuv. et VAL. PLATE XII. Le Cheilodiptere Arabique, Cuv. et Valen. Hist. Nat. des Poissons, ii. p. 165. B. 7; D. 6-1.10 or 1.9; P. 14; V. 1.6; A. 2.9 or 1.9; C. 17. THE Arabian Cheilodipterus illustrates another genus of Lacepede, formed from one of Com- merson's fishes, and bearing the same relation to Apogon, which Lucioperca does to the Perch. The double edged preopercle, finely serrated ; the two dorsal fins far removed, and the scaling large, but easily rubbed off; while a portion of the teeth are long, sharp, and rather strong. The fish represented on Plate XII. is a native of the Red Sea, where it is frequently taken by the Arabs. The colour of the upper parts is a fresh olive green, changing on the sides and belly to silvery, deeply tinted with a reddish or rose colour. The whole body is marked longitudi- nally with dark lines, somewhat following the bend of the fish, and amounting in number to from fourteen to seventeen. At the insertion of the tail there is a cross band of the same colour ARABIAN CHEILODIPTERUS. 121 as the back, shading at the edges into yellowish, and in the centre of it, as terminating the lateral line, there is a round black spot. The fins are of a grayish tint, nearly formed as in the preceding fish, the first dorsal with the anterior and upper edge black. These fish seem also to reach only a small size, and all those which are yet known are banded longitudinally, as that now described. Three species only are noticed. The first has eight bands ; the second, as we have seen, from four- teen to seventeen ; and the last, discovered near the Society Isles by Lesson and Garnot, has five black bands. C. quinquelineatus is only four inches in length, of a silvery white ; the stripes of deep black. Our next fish is very remarkable : it is fi&l™^ ' fxn EKSITY THE LARGE^EYETTPOMATOME. Potnatomus telescopium. — Risso. PLATE XIII. Des Pomatomes Cuv. et Valen. Hist. Nat. des Poissons, ii. 169. D. 7— 1.10; A. 2.9; C. 17; P. 18; V. 1.5. THIS fish, according to M. Risso, is very rarely taken, never almost leaving the bottom of the deep sea. At Nice he was only aware of two specimens being taken during thirty years. The flesh is well-tasted, tender, and firm. It is remarkable for the immense size of the eyes, which occupy nearly the whole cheek, and is an example of that form of the organ, which we mentioned (p. 74) occurred in those species which generally kept at a depth beyond the penetration of the sun's rays, and which might be called nocturnal. Whether its sight is acute, or what peculiarities there are in the structure of the eye and its other organs, is yet a desideratum among ichthyologists, the rarity of the species having hitherto prevented examination. The cheeks and opercles are covered with scales ; the form of the preopercle is remarkable in the THE LARGE-EYED POMATOME. 123 projection backwards of the lower angle, and neither it nor the opercles are armed with teeth or spines. The colours are a brownish violet, with blue and red reflections ; the fins of a brownish black. These are of middling size, except the tail, and present nothing very remarkable. The tail is expanding and very ample, considerably forked. The length of the specimen taken at Nice by M. Risso was about twenty inches. 124 COMMERSON'S AMBASSIS, Ambassis Commersoni. — Cuv. et VAL. PLATE XIV. Des Ambassis, Cuv. et Valen. Hist. Nat. des Poissons, ii. 1 75. —Genus Chonda, Hamilt. Buchan. Gang. Fishes, 103. D. 7—1.9; A. &9; C. 17; P. 12; V. 1.5. AMBASSIS is distinguished by the protracted mouth, the toothing of the suborbitary bone, by the double edge extending round the preopercle, the serrating of the lower edge, and by the small nearly concealed spine at the insertion of the first dorsal fin. They seem to inhabit the tanks, salt marshes, and pools of India, and to fill the same place in the Indian ichthyology with some of the small Cyprini and Sticklebacks of Europe. The concealed spine is an approach to the latter. According to Hamilton Buchanan, they are all very small and of little value, although in many places abundant, and used in considerable quan- tities; but as food they are insipid, and filled with small bones, for which defects their size does not compensate. That which Cuvier has taken to illustrate the genus is Commerson's Ambassis of the accom- panying plate, one of the largest of the genus, COMMERSON'S AMBASSIS. 125 plentiful in the seas around the Isle of Bourbon, and found also at the mouths of the Pondichery river on the coast of Malabar, and in Java. In the island of Bourbon it is relished in soups, and sometimes preserved in pickle; and the fishing of them gives employment to many of the inha- bitants. It is a handsome and rather beautiful fish when fresh taken from the water, a silvery tint over- spreading the whole body. The upper part of the back is of a brownish green, which gradually falls into a paler shade on the lower parts ; and along the centre of the fish there runs a pale broad shining line, which relieves the uniformity of its colouring. The principal parts to be examined here are the serrating of the under edges of the preopercles and the first dorsal fin ; the first ray is very short, the second the longest ; but before either there is a small lying spine, not seen in the figure, and which can only be discovered by feeling with the finger. This fish is about seven inches in length. There is a peculiarity in the ribs of this species mentioned by Cuvier ; it commences with the third pair, and each of the eight follow- ing have their upper half dilated into a small oval plate, with a longitudinal groove on the outward surface, which runs in a line with the slender part of the bone. There are several other species of this genus 126 COMMERSON'S AMBASSIS. but they are all of little comparative interest. The A. nama is common in ponds throughout Bengal, and seldom exceeds three inches in length. A. baculis is found in the north-eastern parts of Bengal, and seldom exceeds an inch and a half in length ; while the A. ranga of a similar size is found in the fresh waters of all the Gangetic provinces. The whole of these pretty little fish are diaphanous in the structure of the skin and sides, that the muscles, ribs, and even the intes- tines, can be traced ; and the intensity of their bright colouring is from this cause considerably weakened. 127 THE ZINGEL. aris.— Cuv. et VAL. PLATE XV. Perca asper, Linnaeus, Bloch — L'apron properment dit, Cuv. et Valen. Hist. Nat. des Poissons, ii. p. 188. B. 7; D. 8-1.12; A. 1.12; C. 17; P. 14; V. 1.5. THE little fish forming this genus is at once distinguished by the lengthened form of the body, and by the situation of the mouth, which is almost placed under the snout or nose, that part being rounded and projecting over it ; it is also remark- able for the roughness of its scales, whence by Rondoletius it was said to receive its name of Asperus. It is found in the Rhone and its tribu- taries, but is not known in the rivers on the west of France. It is also said to be found in the Danube, while other ichthyologists assert, that it is to be met with in some of the Russian streams. It seldom exceeds six or seven inches in length, but is used at table, and is esteemed good and delicate. By the fishermen of the Rhone, it is 128 THE ZINGEL. termed " Sorcier," and three varieties are dis- tinguished, of a black, gray, and yellow colour. There is another little fish inhabiting the Danube, which Cuvier places with this, the Perca zingel of Linnaeus^ It differs from the former in its larger size, reaching fifteen inches in length, and a weight of two or three pounds, and by the greater number of rays in the dorsal fins. The colour of the back and sides are of a grayish yellow, that of the lower parts whitish ; four clouded bands of a brownish black descend obliquely from above, and mingle with dots and spots equally clouded upon the sides ; the muzzle and opercles are brownish, and on the cheeks there are some brownish black bands. These are the only known fishes which approach to this form. 129 THE ORIENTAL GRAMISTES. Gramistes orientalis. — BLOCH. PLATE XVI. Gramistes orientalis, Block — Le Gramiste oriental, Cuv. et Valen. Hist. Nat. des Poissons. D. 7—1.13} A. 3.8; C. 17; P. 14; V. 1.5. GRAMISTES is the last genus of the Perches with two dorsal fins, or where there is a visible separation between the spined and soft parts. That established by Bloch contained several species ; by Cuvier, however, it is restricted to the fish of the accompanying plate, the only one yet discovered. It approaches nearest in structure to the Rypticus arenatus of Plate XXX, but is at once distinguished by the double dorsal fin. The present fish was described long since in the work of Seba. It is of small size, not exceeding five or six inches, and, when newly taken from the water, seems without scales, which are very small, but appear on the skin being dried. The opercle has three short spines. The markings of this fish are very singular : the tround colour is a brownish black, with longi- ii'linal Jj^es of /hite on each side, generally 130 THE ORIENTAL GRAMISTES. seven in number, with a single one along the back, and another along the belly. On the opercles and cheeks they form a sort of network. The fins are yellowish. In some specimens, the number of lines varies ; and two or tliAje species have, on that account, been made of them. These, however, Cuvier, is inclined to consider as all belonging to one, and cites a specimen having seven lines on the one side and eight on the other. In the internal structure »it goes off from the Perches we have yet seen, and approaches that of some of the first divisions of the next section, the OF THE i DIVERSITY)) i^ PERCHES WITH A SINGLE DORSAL FIN. WE now come to the second great division of the Percoid Fishes, characterized and known at first sight by the simple character of a single dorsal fin, no separation appearing between the spiny and softly rayed part. The sub-divisions, it will be seen, are taken from the opercle, pre- opercle, teeth, and jaws. The first genus is Serranus, containing a numerous series of species, almost all of them remarkable for the beauty of their tints and singularity of marking. Cuvier has separated them into three sections : the first have the jaws naked, and they are of a small size ; the second are fish of greater size, and have the under jaw scaled ; and the third, of middling size and lively colours, have the head and jaws covered with scales similar to those of the body. The first we shall notice is a beautiful fish from the Medi- terranean Seas, the 132 LETTERED SERRANUS. Serranus scriba Cuv. et VAL. PLATE XVII. Perca scriba, Lin-neeus — Le Serran ecriture, (Juv. et Valen. Hist, Nat. des Poissons, ii. p. 2i D. 10.14; A 3.7; C. 17; P. '13; V. 1.5. THIS beautifully marked fish is found on the »*>ast of Provence, Malta, and Naples, besides other parts of the Mediterranean. The gener ground tint of the skin is a reddish orange, some times inclining to olive, and shading to a pale tint on the lower parts. The back is banded in the perch, with dull brown bands which gra- dually lose themselves after passing the middle of the fish; but the most showy marks are the narrow irregular lines of rich blue which run on the nose below the eyes, and on the cheeks which assume the form of some written charac- ter, and which have given occasion to the name of scriba being applied to it. The ground colour of the fins, except the pectoral, is gray, spotted sometimes with reddish orange, and sometimes with purple. On the spiny part of the dorsal fin these marks take the form of a blotch or large spot, near the tip of each spine ; but in the others they are disposed in transverse rows LETTERED SERRANUS. 133 upon the membrane, and have a regular appear- ance ; the pectoral fin has the ground colour of a gamboge yellow. These fish can never be seen in perfection, except when newly taken from the water ; then their beauty is fresh and delicate, but in a few minutes it changes, even as soon as the fish dies, and the keeping for a day, or preservation in spirits, destroys all but the traces of where the delicate markings existed. They appear very different, also, according to their age, and the season at which they are taken. The present species scarcely ever exceeds half a pound in weight, and is to be seen in the markets at almost all seasons, being esteemed as an article of food. It feeds on small fish, and marine animals ; but a species of cuttle fish, (Sepia octopoda,) is said to be among its most favourite prey, being even watched for, and the tentacula seized so soon as they are protruded from the hole where it is hid. There is a circumstance in the economy of this fish, which merits observation, and even farther examination. It is asserted by Cuvier, who cites, in addition to his own observations, those of Cavolini, that the milt and roe are com bined in one individual, and that the fish are in fact hermaphrodites. The milt, or body supposed to be so, is placed at the lower part of each roe or ovarium, growing and increasing with that organ, 134 LETTERED SERRANUS. and appearing small and imperfect at the season when the spawn was little advanced. Fish with a milt only, appear not to have been met with, and even among the ancients, to whom the fish was known, it was an accepted opinion, that females only existed. Another Mediterranean species is the Perca cabrilla of Linnaeus, distinguished from the last by the want of the inscription-like markings on the head, but having three or four oblique bands on the cheeks, and longitudinal stripes on the body, of a bright vermilion. It has also the deeper transverse bands on the body, bright spots and bands on the fins, and is altogether a fish of as great beauty as the preceding. It is commonly taken in the Mediterranean. A curious species from the north-west of New Guinea is described in the voyage of Frecynet* nearly white, with a black line running along the centre ; and another species is mentioned by Cuvier, which has the skin which covers the preopercle nearly without scales — the Serranus gymnopareius* Our next fish represents the form of Cuvier's second division of this great genus, with the head and jaws strongly scaled, and called by him Barbier ; except in this character, they are nearly allied to the last. 135 THE SPINED SERRANUS. Serranus anthias. — Cuv. et VAL. PLATE XVIII. Anthias primus, Rondoletius — Labrus anthias, Linncem— Le Barbier de la Mediterranee, Cuv. et Valen. Hist. Nat. des Poissons, ii. p. 250. D. 10 or 11—1.5; P. 17; V. 1.5; A. 3.7; C. 17. THE colour of this beautiful fish is a brilliant red or scarlet, which, on the sides, assumes a golden tint, and on the belly becomes pale, or almost silvery. Upon the sides of the head are three bands of golden yellow, none of which pass the gill covers except the lowest, which reaches nearly to the insertion of the pectoral fin. On the forehead there are transverse bands of bronzed green, and at the base of the dorsal fin along the back there are ten or twelve small spots of the same colour. The fins are all tinted with red and yellow ; the dorsal fin has a border of the latter colour. The spiny part of this fin has sometimes ten, sometimes eleven spines, very strong — the third exceeding all the others in length by nearly a half. It is from a supposed resemblance of a portion of this spine to a razor, that the French 136 THE SPINED SERRANUS. have applied the title of " Barbier." The ventral fins have the rays very long, reaching nearly to the middle of the anal. It is found every where in the Mediterranean, and is in many places abun- dant. In size, it never reaches a foot in length, and is most generally from five to seven inches. There is little doubt of this fish being known to the ancients ; and it was rendered sacred among the divers for marine productions, from the supposition that no formidable fish would approach its retreats. When caught by a hook, they were said to be immediately relieved by the rest of the shoal cutting the line with their sharp spine. A much larger fish has been confused with this, and has had attributed to it great prowess in destroying sea monsters, and wounding the fishermen when taken. A Brazilian species is so similar as scarcely to be distinguished. It differs in the rays of some of the fins, thus, D. 10.12, and C. 3.6, and Cuvier has applied the name of S. tonsor. Another species placed in this division, but which does not agree entirely in all the characters of scaling about the jaws and head, has been named S. oculatus from the very large size of the eyes. The colour is a rich golden rose. It is found in the vicinity of Martinique. We now come to far the most numerous divi- sion of this section, those which have the under THE SPINED SERRANUS. 137 jaw only covered with very small scales, to which Cuvier has given the name of Merous. One of the largest of this division, the Perca gigas of Brunich, by the older ichthyologists was scarcely if at all known ; and by those of the present day comparatively little, except that the form has been ascertained. It is a fish which attains to a weight of sixty pounds, and is sometimes taken when approaching the coasts in spawning time. It occurs in the Mediterranean, and is esteemed in some places for the table. The general colour is brownish, varying to a deeper shade, or tinted with more yellow according to age, and the body is clouded or marbled over with deep blotches of gray. Another species, reaching nearly an equal size with the above, was discovered by Geoffrey St Hilaire on the coast of Egypt ; but it differs in the beautiful colouring with which it is adorned, being of a deep green, shading to white on the lower parts, and upon the back, sides, and fins, varied with markings of a clear and fresh tint of the same colour. It has been named Serranus cemus, Geoffroy. Some species from the Indian Seas are very remarkable for the diversity and beauty of their tints. But the most remarkable fish which Cuvier has placed in this division is the 1H8 LONG TAILED SERRANUS. Serranus pkceton. — Cuv. et VAL. PLATE XIX. Le Merou paille en queue, Cuv. et Valen. Hist. Nat. des Poissons, ii. 309. D. 9.11 ; A. 3.9 ; C. 14 ; P. 17 ; V. 1.5. THIS fish has been figured from a specimen in the Jardin du Roi, where it exists without any note of its habits or native country. It is in length about six inches, and in its dried state is of a uniform dull tint. The singular character of this fish is in the tail, which has the two centre rays lengthened, and held together by a membrane which covers them like a sheath, and which extends into a narrow filament equalling the body in length. S . v • I * m. • ,,. t ^f? - ': : ETle/ Of THE PEBSITY LARGE FINNED-1SERRANUS. Serranus altivelis — Cuv. et VAL. PLATE XX. Le Merou a hautes voiles, Cuv. et Valen. Hist Nat. dei Poissons, ii. p. 324. D. 10.19; A. 3.10; C. 17; P. 16; V. 1.5. THIS delicately coloured species is placed at the commencement of a group characterized by having markings on the body more or less spotted. The general tints are unobtrusive, being of a yellowish brown, the fins grayish, but relieved by the distinct spotting which is distributed over both. It is chiefly remarkable for the height and size of the dorsal fin, particularly the posterior or soft rayed part of it. It inhabits the Javanese Seas, but nothing farther appears to be known regarding it. Cuvier still farther sub-divides the above section, by placing together all those Serrani which have the same distribution of spotted markings, but they become so very small as to be almost like points. One of the more remarkable with this colouring is a fish, also from the Javanese Seas, entirely of a fine red, or orange, spotted 140 S. CYANOSTIGMA. over with minute clear blue; the spiny part of the dorsal fin bordered with orange ; the soft portion, and all the other fins, bordered with the same blue as that of the spots. It. will stand as the S. cyanostigma of Kuhl and Von Hasselt. Another equally so is the S. myriaster of Russel, of a brownish purple, and also covered with a thousand stars of transparent blue. Another curious fish is entirely of a brick red, with nume- rous white spots, and, in addition, is marked transversely with six bands of black, whence it has been termed S. sexfasciatus. Before quitting this genus, or rather great division, it may be remarked, that in the lining, spotting, or banding, which so curiously and beautifully diversify the skins of these fishes, blue is one of the most prevailing colours. A half nearly are so marked, while it will be seen continued in the next fishes, (Plate XXII.) which Cuvier has placed in a small genus, and which, he remarks, he only separates for the sake of simpli- fying the nomenclature. This has all the charac- ters of Serranus, but differs in having the edge of the preopercles, around and below the angle, divided into teeth, varying in size, directed obliquely forward, and somewhat resembling the teeth or points in the rowel of a spur, whence he has named the genus Plectropoma* The scales * wxJJxrgov, a spur ; «r»/*«, a covering. PLECTKOPOMA. 141 are small, ciliated, and stretch upon the base of the anal and dorsal fins. They are all natives of the warmer seas. This genus, though small, is again sub-divided into those which have the rising edge of the preopercle plain, or finely toothed. Belonging to the first is the 142 LEOPARD-SPOTTED PLECTROPOMA. Plectropoma leopardinus — Cuv. et VAL. PLATE XXI. Holocentrus leopardus, Lacepede Le Plectropome leo- pard. Cuv. et Valen. Hist. Nat. des Poissons, ii. p. 392. D. 8.11 ; C. 2.8; C. 15; P. 14; V. 1.5. IN this we see the continuation of the minute spotting of the last division of the Serrani. It is entirely of a yellowish brown, thickly covered on the upper parts with brown or reddish spots. It is from the Indian Seas, and reaches a consider- able size. In the second division, with the ascending edges of the preopercle finely toothed, is the 143 BEAU IFUL PLECTROPOMA. Plectropoma puella. — Cuv. et VAL. PLATE XXII. ue plectropome demoiselle, Cuv. et Valen. Hist Nat. aes Poissons, ii. p. 406. D. 10.16; A. 3.7; C. 17; P. 13; V. 1.5. THIS is a beautifully marked little fish of about four or five inches in length, and has been found in the vicinity of Martinique. The ground tint of the body is olive, crossed by six bands of violet black — the third, in the centre of the body, is very broad and conspicuous, and is immediately followed by one of narrow dimensions. A line of blue surrounds the orbit, and passes immediately before the first black band. Three others, of the same colour, cross the opercle, and extend upon the breast before the pectoral fins, and there is another line on the forehead between the eyes. The fins are tinted with olive and yellow — the pectorals sometimes with a delicate rose colour. Other two species of this division only are known, the one also from Martinique, the other from Java ; and from these we pass to another genus peculiar to the seas of India, named Diacope,* * A/axa ? ~> = xm^>^xVg/ ' VC > —IN H LIBRARY OF THE UNIVERSITY OF CALIFORNIA ^m^^p !§^ SITY OF CALIFORNIA re> LIBRARY OF THE UNIVERSITY OF C SITY OF CALIFORNIA ft) LIBRARY OF THE UNIVERSITY OF (5V~-/f5 &