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Show 286 PISCES. LAMNA, Cuv.,(l) Only differs from a true Squalus in the pyramidal snout, under the base of which the nostrils are placed, and in the locality of the bran. chial openings which are before the pectorals. The species that in· habits the seas of Europe, 8q. cornubicus, Schn.; Lacep., I, ii, 3(2) (The Porbeagle Shark), has a projecting carina on each side of the tail, and the lobes of its caudal are almost equal. Its size has often caused it to be confounded with the White Shark.(3) Species with spiracles and an anal. GALEus, Cuv.,(4) The general form of the Sharks, but differing in the presence of spiracles. But a single species is known that inhabits the seas of Europe. It is the Sq. galeus, L.; lll., 118, Duham., Sect. IX, pl. xx, f. 1 and 2.(5) The MusTELus, Cuv.(6) Resembles the Squali and Galei in form, but in addition to the presence of spiracles as in the latter, the teeth are like small paving stones. Two species are taken in the seas of Europe, which are con· founded under the name of Sq. mustelus, L.(7) The (1) Lamna, one of the Greek names of the lamia, which particular word f am prevented from using, as Fabricius has applied it to a genus of insects. (2) The lamia, Rondelet, 399, the carcharias, Aldrov., 383 and 388, are nothing more than the cornubicus, which attains a very large size, notwithstanding what Bl., Scbn., p. 132, says to the contrary. The pretended jaws of the c:trcharias, given by Aldrov., 382, are also those of the cornubicus. It appears to be more com· mon in the Mediterranean than the true Squalus. (3) Add Sq. monensis, Sh., which has a shorter snout and sharper teeth;-.htr rus oxyrhyncltm, Rafin., Caratt., XIII, 1, is very possibly a species of this genus, perhaps the common one disfigured by the stuffer. ( 4) Galeua, the generic name, in Greek, of the SqualL (5) It is also the lamiola, Ronde!., 377, cop. Aldrov., 394 and 393, Salv., 130, I, cop. Will., B, 6. The enormous size .sometimes attributed to it, is owing to the fact that the teeth and jaws, represented Lacep., I, vii, 2, and Herissant, Ac. ?es Sc., 1794, have been referred to it-they belong, however, to a foreign specie~ which will be described in our Icthyology. . (6} Mmtelm, the Latin translation of ;-.:tMo,, a generic name for the Squali. N.D. M. Rafin. unites ScyU.ium, Galeus, and Mustelm, in his genus G.u.xvs. (7) The Emisaole commune, Rondel., 375, Salv., 136, f. 2, cop. Will., pl. B, 5, f, 1, and improperly cited as the galeus. CHONDROPTERYGII DRANCHIIS FIXIS. 287 NoTIDANus, Cuv.(t) Only differs from Galeus in the absence of the first dorsal. Sq. griseus, L.; Sq. vacca, Schn.; Augustin Scilla, pl. xvii; Le Griset.(2) Ash-coloured above, whitish beneath, and very remarkable for its six wide branchial openings, and for its teeth which are triangular above and serrated below; the snout is depressed and rounded like that of the Shark. Sq. cinereus, Gm. Seven very wide branchial openings; teeth similar to the lower ones of the Griseus; snout pointed like that of the cornubicus.(3) Both these species inhabit the Mediterranean.( 4) The SELAOHE, Cuv.(5) In addition to the form of the Squali, and the spiracles of the Galei, is furnished with branchial openings that are nearly large enough to encircle the neck, and with small conical and unemarginate teeth. The common species, Sq. maximus, L.; Blainv., Ann. du Mus. tom. ~VIII, pl. vi, f. 1 (The Basking Shark), has nothing of the ferocity of the Shark, although it surpasses it in size as well as all other Squali. Individuals have been captured that were more than thirty feet in length. It inhabits the Arctic Seas, but is sometimes driven on the coast of France by the strength of the north-east winds.(6) CEsTRAoioN, Cuv. The spiracles, anal, and teeth en pave of the Musteli, with a spine The Emis8ole tachetee de blanc, or lentillat-Rondel., 376, Uel., 71, cop. Aldrov ., 393. (1) NlllrriJ'.:tvo' (dry back), the Athenian name of some Squalus. (2) The teeth are well figured, but the fish itself very badly. It is the genus Huucnus, Rafin. ~3) It is the genus HEl'TR.A.Ncuus, Rafin., who erroneously states that it has no sp1racles. ~4) Messrs Quoy and Gaym. have discovered, in the Indian Ocean, a species of this subgenus which is all spotted with black, and has seven spiracles. (5) Selache, :l:exix,,, a Greek name common to all the cartilaginous fishes. (6) See the anatomy ofthis fish by M. de Blainville, loc. cit. N.B. The differences observed between the figures and descriptions of Gunner, Dronth., Ill, ii, l, ofPenn:mt, Brit. Zool., No. 41, of Home, Phil. Trans., 1809, and of Shaw, Gen. Zool. may be owing to the difficulty that attends all attempts to observe such large ~shes, and may not be sufficient to establish species. No1· can I see in what particulars the Squalus elephas, Lesuew·, Ac. Nat. Sc. Philad., diffe1•s from this mfR:i. mu.,. \ |