80 
U. S. P. R. R. EXP. AND SURVEYS-ZOOLOGY-GENERAL REPORT. 
occupy the limb of tbe preopercle, and twp the upper and posterior edge of tbe opercle. The 
supra-scapular region exhibits likewise three such spines. The posterior extremity of the max¬ 
illary reaches a vertical line drawn behind the pupil. The lower jaw is a little longer than the 
upper. The outline of the spinous portion of the dorsal fin is convex, the highest spines being 
higher than any of the soft -rays. The caudal is rounded off upon its posterior margin. The 
tips of the posterior rays of the anal are even with those of the posterior rays of the caudal, 
both fins approximating the base of the caudal. The anterior spiny ray of the anal is situated 
upon the right side of the second ray, and thus not exhibited upon the accompanying plate ; it 
is, as usual, the shortest. The ventrals are elongated, inserted immediately behind the base of 
the pectorals, and reaching the vent with the tip of the longest rays. The pectorals are broad 
and well developed, since their posterior extremity extends a little further back than the ventrals. 
The ten inferior rays are stout and undivided, with the interradial membrane deeply indentated. 
Br. YII: VII; D XII, 13 ; A III, 7 ; C 2, 1, 6, 5, 1, 3 ; V I, 5 ; P 18. 
The scales are rather above the middle size, those on the head and opercular apparatus being 
comparatively more developed than in the preceding species. They are quite regular in shape, 
a little longer than deep, posteriorly ciliated, with diverging grooves upon the anterior section 
only. The accessory scales are quite numerous. The lateral line is parallel with the outline 
of the back. The ground color is greenish sulphur yellow ; purplish black patches over the 
head, sides of body, and fins, in the midst of which patches appear crowded whitish spots. An 
area of ground color may be traced from the third and fourth dorsal spines obliquely downwards 
and backwards, towards the base of the caudal, in an oblique direction from the dorsal fin to 
the lateral line ; then along the course of lateral line to the base of caudal fin. The throat is 
deep sulphur yellow; the inferior surface of the head and belly is spread all over with a duller 
tint. 
References to the figures .—Plate XXII, fig. 1, represents Sebastes faciatus, somewhat reduced 
in size. Fig. 2, a scale from the dorsal region. Fig. 3, a scale from the lateral line. Fig. 4, a 
scale fi jm the abdominal region. Fig. 5, an accessory scale. Figs. 2—5, are magnified. 
List of specimens. 
Catalogue number, j 
Corresponding No. 
of 1 
No. of specimens. J 
Sex and age. 
Locality. 
When collected. 
Whence obtained. 
Original number. 
Nature of specimens. 
Collected by— 
345 
2 
adt. 
Presidio, Cal_ 
1853 
Lieut. Trowbridge_ 
Alcoholic.- 
Lieut. Trowbridge. 
346 
1 
yg- 
San Francisco, Cal_ 
1856 
Lieut. Williamson_ 
_do_ 
Dr. Newberry_ 
3. SEBASTES AURICULATUS, Grd. 
Spec. Ciiar. _Upper surface of bead provided with small horizontal and acute spines. Posterior extremity of maxillary 
extending to a vertical line drawn posteriorly to the orbit. Origin of dorsal fin situated in advance of the base of the 
pectorals. Blackish brown above, lighter beneath. A black spot upon the upper part of the opercle. 
Syn. —Sebastes auriculatus, Grd. Proc. Acad. Nat. Sc. Philad. VII, 1854, 131 and 146. 
This species is allied to S. inermis, of the Japanese seas, in the structure of the upper surface 
