8» 



una Ctupea by the lobed and shielded opercule, the quvions 

 mouth, the bodily shape, and the want of lateral appendage. It 

 belongs of course, with the four following, to the family of Clu- 

 pides. The name means lobcd opercule. 



26th Species. Ohio Goldshad. Pomolobus. chrysochloris. 

 Pomolobe dore. 



G. eenish-gold above, silvery beneath; lateral line straight: 

 diameter two ninths of the length: dorsal and anal fin trapezoi- 

 dal and with 1 8 rays: tail brown and forked. ( 



A fine fish from twelve to eighteen inches long. Flesh es- 

 teemed, white and with less bones than the shad. It is taken 

 with the seine and harpoon, as it seldom bites at the hook; it 

 preys however on some small fishes. It seldom goes as far a^ 

 Pittsburg!^, and does not run up the creeks. At the falls it ap-; 

 pears in M^rch and April, and d s.^ppears in September. Its 

 vulgar names are Ohio Shad, Gold Shad, Green Herring, &c.. 



It has the back convex, blue under the sca.es Sides, belly, 

 and throat with purple and violet shades. Top of the head and 

 neck clouded with brown. Several sutures on the sides of the 

 he:\d. Upper lip truncate, flexuose, and even retuse; the low- 

 er obtuse and brown at the end. Eyes black: iris silvery an(^ 

 gilt. Opcrrule nearly trilobe, the upper lobe covered by a large 

 oboval and radiated shield. Scales large deciduous, lateral lino 

 concealed by them. Dorsal fin olivaceous, in the middle of the 

 back, first and second ray shorter and simple, the third long, the 

 others gradually shorter. Anal fin consimilar but whitish. Pec- 

 toral and abdominal fins trapezoidal, the lowest ray simple and 

 the longest: pectoral 15 rays. Tail equal 32 rays, brown, tip* 

 darker, equal, decurrent on each side, end of the body truncate^ 

 XI. Genus. Gizzard. Dorosoma. Dorosome. 



Body lanceolate, compressed, scaly. Vent medial. Abdo- 

 men carinated, serrated, and with broad tranversal scales, as far 

 as the abdominal fins. Head scaleless, gill cover triple, oper- 

 cule simple: mouth diagonal without teeth, lovter jaw short- 

 er. Abdominal fins with nine rays and no appendage: dorsal 

 opposite. 



It diff'ers from Clufiea ^nd Pomolobus^hy the medial vent^ 

 lanceolate body, gill covers, S;c. The name means lanceolate 

 body. 



