80 



U. S. p. R. R. EXP. AND SURVEYS ZOOLOGY — GENERAL REPORT. 



occupy the limb of the preoiiercle, and two the upper and posterior edge of the 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. VII : 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. 



Eeferences to tJie figures. — Plate XXII, fig. 1, represents Sehastes 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 from the abdominal region. Fig. 5, an accessory scale. Figs. 2 — 5, are magnified. 



List of specimens. 



3. SEBASTES AURICULATUS, Grd. 



Spec. Chab. — Upper surface of head provided with small horizontal and acute spines. Posterior extremity of maadllary 

 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. 



SffN. — Sebasles aurictilatus, Grd. Proc. Acad. Nat. Sc. Philad. VII, 1854, 131 and 146. 



This flpecies is allied to S. incrmis, of the Japanese seas, in the structure of the upper surface 



