FISHES-COTTIDAE-ARTEDIUS NOTOSPILOTUS. 
71 
somewhat shorter than in the opposite fin. The insertion of the ventrals takes place in advance of 
a line intersecting the middle of the base of the pectorals. These fins are rather slender, their 
tips not reaching the vent. They are composed of a spine and three articulated hut undivided 
rays. The base of the pectorals is quite oblique, suh-crescentic, and following the outline of the 
gill apertures, so that its inferior portion reaches the inferior surface of the head. The fins 
themselves are broad, the inferior rays much stouter than the rest, and the middle ones con¬ 
siderably longer than the upper and lower ; their extremities extending somewhat beyond a 
line intersecting the anterior margin of the anal. The rays, fifteen in number, are all undivided, 
though articulated. 
Br. Y: Y ; D IX, 17 ; A 11; C 3, 1, 5, 4, 1, 2 ; Y I, 3 ; P 15. 
The upper surface and sides of the head are perfectly smooth ; a small membranous flap is to 
he seen above the superior and posterior rim of the orbit. The body is smooth, also, save a 
narrow band of ciliated scales extending along the dorsal region from the upper portion of the 
thoracic arch to near the terminus of the second dorsal fin, where it approximates that fin, hence 
diverges from it anteriorly. The area thus covered by the scales is broader anteriorly than 
posteriorly; the scales are disposed upon transverse oblique series of eight scales each ante¬ 
riorly, and reduced to less than half that number posteriorly. The lateral line is conspicuous, 
undergoing a slight inflection downwards upon the middle of the flanks. 
The ground color of the upper region is deep chestnut brown, maculated with yellowish. The 
lower part of the sides below the lateral line is ocellated with yellowish roundish spots of various 
sizes. The inferior region is unicolor, as well as the anal and ventrals. The other fins are 
spotted or barred with blackish. The chin is maculated with greyish. 
References to the figures .—Plate XXIIa, fig. 5, represents Artedius lateralis, from San 
Francisco, California, and size of life. Fig. 6, a dorsal scale-like shield, magnified. 
List of specimens. 
Catalogue number. 
No. of specimens. 
Locality, 
Whence obtained. 
Original number. 
Nature of specimens. 
Collected by— 
328 
1 
San Luis Obispo, Cal_ 
Lieut. Trowbridge_ 
Alcoholic- 
Lieut. Trowbridge_ 
366 
1 
San Francisco, Cal__ 
Dr. Ayres_ 
36 
_.do__ 
Dr. Ayrt?s 
2. ARTEDIUS NOTOSPILOTUS, Grd. 
Plate XXII b, Figs. 5 & 6. 
Spec. Char. —Surface of head sub-tuberculous and scaly. Preopercle armed with a flat tricuspid spine. Anterior margin 
of first dorsal situated in advance of the beginning of the dorsal band of scales, which is broad, and extends from the 
thoracic arch to near the terminus of the base of the second dorsal. Olivaceous, with a series of saddle-like black patches. 
Abdomen dull yellow or white. 
Syn .—Artedius notospUotus, Grd. Proc. Acad. Nat. Sci. Pbilad. YHI, 1856, 134 ; &, in Bost. Jour. Nat. Hist. VI, 1857 ; 
PI. xxiv, figs. 5 and 6. 
Ccdyeilejoidotus lateralis, Ayres, Proc. Cal. Acad. Nat. Sci. I, 1855, 77. 
The specimen which we propose to describe, somewhat smaller than the preceding, measures 
