Jordan and Ever rnann. Fishes of North America, 2043 



Brachyopsis xyosternus, JORDAN & GILBERT, Proc. TJ. S. Nat. Mus., in, July 2, 1880, 152, 

 Santa Cruz, California; (Coll. Dr. C. L. Anderson) ; JORDAN & GILBERT, Synopsis, 

 727, 1883 ; JORDAN, Cat. Fishes K". A., 113, 1885. 



Agon us (Brachyopsis) annce, STBINDACHNER, Ichth. Beitriige, ix, 254 (17), pi. 6, figs. 1, la, 

 aiid Ib, Sitzb. der K. Acad. der Wiss., LXXXII, July 15, 1880, San Francisco, California. 



763. OCCA, Jordan & Evermaun, new geuus. 



Occa, JORDAN & EVERMANN, ue\v geuus (verrucoains). 



Tliis genus differs from Brachyopsis in tlie short snout which is not 

 tubular, and is formed as in Stellerina. From the latter genus it is sepa- 

 rated by the large plates on the breast, and by the presence of at least a 

 lew teeth on the vomer and palatines. North Pacific, (occa, a harrow.) 



a. Anal rays 10 to 12; plates of belly bluntly spiuous; ventrals pale. VERKUCOSA, 2402. 

 aa. Anal rays 14 to 16; plates of belly nearly smooth; ventrals dark. 



DODECAKDRON, 2403. 



2402. OGTA VEKKUCOSA* (Lockington). 



15i . 6; D. VII to IX-7 or 8; A. 11 or 12 (10 or 11, Lockington) ; P. 14 or 

 ir>; V. 3 (I, 2); C. 1, 11, 1; vertebrae 13 + 24 = 37 (37). Pyloric cteca 6 (1 

 individual ) ; lateral line 36 or 37. Body and tail depressed throughout, the 

 former rounded octagonal, the faces little concave ; caudal peduncle hex- 

 agonal, short, with about 7 median dorsal and 5 or H median ventral plates; 

 the sharp curved spines better developed than in O. dodecaedron, present 

 on all ridges from head to caudal, except 2 or 3 plates of median ventral 

 series of peduncle; plates of median lateral (lateral line) series large and 

 bearing small .spines from head to near posterior end of second dorsal; 4 

 or 5 pairs of plates between last ray of second dorsal and first median 

 plate, and 5 pairs between last anal ray and first median plate; about 18 

 fairly large and tuberculated plates on breast, some of them separated by 

 narrow intervals of membrane with numerous prickles. Branchiostegal 

 membrane naked posteriorly. Under side of mandible and anterolateral 

 parts of brani'hiostegal membrane with minute plates or prickles; 3 or 4 

 large spinous plates in front of, and a number of small plates and prickles 

 on base of pectoral fin; the ventrolateral series separated, from ventrals 

 nearly to anal, by membrane studded with 6 or 8 small striated plates 

 behind and a few around vent; the latter a little farther than usual from 

 base of ventrals (as in 0. dodecaedron). Top of head, dorsal, and 2 adja- 

 cent faces of body granulated; space behind pectoral as far back as its tip 

 naked. Head depressed, elongate, broad behind, its depth of its width, 

 the latter about 6 in length of body. Orbits large, oval, the longitudinal 

 diameter longer than snout, 3 in head. Interorbital space wide, nearly 

 equal to orbit, flat between supraocular ridges ; the latter spineless, turning 

 out almost at right angles, forming a thin saw-like transverse ridge along 



* Diagnosis: Body moderately elongate, tapering, 8-hedral, depressed; depth about 

 width, the latter 6 in length; head broad, much depressed, tapering by concave outlines 

 to a blunt snout, 4| in length of body. Plates in dorsal series 35 or 36; between occiput 

 and first dorsal, 7; between dorsals, 4; from ventral to anal, 10 or 11 pairs. One barbel 

 at tip of each maxillary: gill membranes united, free from isthmus. Median rostral plate 

 wanting: nasal spines minute; no supraocular or occipital spines. Olivaceous, banded 

 with darker; pectorals with 3 or 4 black areas. 



