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Show 94 ZOOLOGY OF TilE VOYAGE OF TilE BEAGLE. TRil'TERYGION CAPITO. Jen. PLATE XIX. :fig. ], T. jusco-g1·iseum, pinnis concol01·ibus: tentaculis palpebralibus duobus parvis gracilibus e crinibus duobus vel tribus formatis; nasalibus minutis simplicibus: dorsali p1·ima ltumai sex-radiatd, mdiis subcequalibus; secundd duplo altio1·e; tertid parum allissimd : linea laterali abbreviata, vix ultra pectorales extensd. B. 6; D. 6-20-14; A. 25; C. 14, &c.; P. 16; V. 2. LoNG. unc. 2. lin. 5. FonM.-Depth at the pectorals one-sixth of the length: thickness at the same part about two-thirds of the depth. Ilead rather large, thicker than the body, contained four and a half times in the entire length. Snout short, the profile falling very abruptly from between the eyes. These last large, one-third the length of the head, high in the cheeks, reaching to, but hardly interrupting, the line of the profile. Above each a short slender compound tentacle: that on the right side consists of two filaments, one simple, the other forked, so as to appear like three; that on the left appears undivided. Also a minute filament at each nostril. The maxillary reaches to beneath the middle of the orbit. Jaws equal: in each a row of small conical sharp-pointed teeth, with a broad velutine band behind, the band, however, only in front. A transverse band of velutine teeth on the vomer, extending a little on to the palatines. Opercle and preopercle rounded. Branchial membrane free all round, with a shallow notch in the middle underneath. The first dorsal commences in a vertical line with the insertions of the ventrals; the rays are six in number, and ,so nearly equal in length as to cause the fin to appear quite even; its height is scarcely more than one-third of the depth. The second dorsal begins a little behind the origin of the pectoro.ls: it is also nearly even, but twice the height of the first. The third closely follows the second: this fin is uneven, but its most elevated point is somewhat higher still than the second. The rays of the first and second of these fins are spinous: those of the third soft and articulated, but all simple. The anal, which has also simple rays, commences beneath the middle of the second dorsal, and terminates in the same vertical line with the end of the third, between which last and the caudal is a small space. Caudal square, with twelve of the principal rays branched. Pectorals a little less than one-fourth of the entire length; the ninth and tenth rays longe:;t; the six lowermost rather stouter than the others, and, as well as the three uppermost, which are very slender, simple; the fourth to the tenth, both inclusive, branched. Ventrals contained about six and a half times in the entire length; consisting of only two slender filamentous rays. Scales minute, their free edges finely ciliated; the concealed portion of each scale marked with twelve or fourteen strioo. The lateral line rises at the upper angle of the opercle, and is well. marked by a row of tubular scales till it reaches a little beyond the extremity of the reclmed pectoral, where it abruptly terminates, and all further trace of it is lost. CoLOun.-(In spirits.) Of a nearly uniform dark brown, inclining to griseous, with some appea.rance of darker clouds or spots between the second dorsal and the lateral line· this last also is indicated by a darker streak than the ground colour. Fins dark brown: t~ere is, however, so~le trac~ of a white edging to the anterior half of the anal, which may have been more conspicuous m the liYing state. |