FAMILY SCOMBRIDZ — ARGYREIQSUS. 125 
Length, 3:0 - 6°0. 
Burrays) Ist Del. £.45 2d: Dele223 P17 5 Vo 1.5; A. 2.16185 1G. 
Cuvier has received the above species from New-York, and is positive that it is identical 
with the Z. vomer of Linneus. 
THE HAIR-FINNED ARGYREIOSE. 
ARGYREIOSUS CAPILLARIS, 
PLATE XXVII. FIG. 82.—(STATE COLLECTION.) 
Hair-finned Dory, Zeus capillaris, Mitcutt, Lit. and Phil. Soc. Vol. 1, p. 383, pl. 2, fig. 2. 
Characteristics. The second and third rays of the first dorsal, and the anterior rays of the 
second dorsal, filamentous. Length 44 inches. 
Description. The vertical and longitudinal diameters nearly equal, and the oblique facial 
line nearly parallel with the base of the anal, which gives a somewhat rhomboidal figure to 
the outline of the fish. The surface is covered with a smooth lustrous skin, in which occur 
granulations, more particularly towards the tail. Lateral line scaly, rising with an abrupt 
irregular curve over the pectorals, and then proceeding straight to the tail. Nostrils double, 
oblique, one above the other, and in a line with the pupil of the eye. Facial profile acute, 
descending at an angle of 60°, until it arrives at a point vertical to the eye, when it proceeds 
at an angle of about 15° to the first dorsal; on this part are three rounded protuberances. 
Lower jaw longest, ascending with a distinct chin, and with minute asperities on the lower 
jaw. Upper jaw with similar asperities on its inner edge. Opercle smooth, and furnished 
with a lustrous silvery membrane. Several branchial rays. 
The first dorsal fin commences above the base of the pectorals, with a short spine closely 
applied to the succeeding ray, which is produced into a black filament three inches long, the 
third ray also ending in a filament an inch and a half long ; the last is simply spinous, and 
about 0°2 long. Between this and the second dorsal are four low sharp recumbent spines, 
concealed in a furrow, and not connected with the first dorsal fin. ‘These spines are appa- 
rently isolated, but are in faet connected with each other by a low membrane. Ata short 
interval, but unconnected with it, commences the second, or what might be termed a third 
dorsal fin: first ray short and spinous; the second filamentous, two inches long, and bifid at 
the tip; the next filamentous, and one and a half inches long; the succeeding one also fila- 
mentous, and one inch in length ; the remainder branched, and counting from the seventh ray, 
are subequal. Pectorals falciform; the fifth ray longest, and reaching to the straight portion 
of the lateral line. Ventrals extend to the fourteenth ray of the anal fin, with the vent imme- 
diately behind them. Between the vent and the anal fin are two broad triangular spines. 
The first ray of the anal short, spinous, with a tooth on its base directed forward. The first 
two or three rays of the anal fin prolonged into filaments one anda half inches long; the 
remaining rays branched, subequal. Caudal deeply forked. 
