si 



A large species reaching 5 and 6 feet in length. It appear* 

 in June and disappears in November, but is seldom caught, ex- 

 cept in the fall, when attempting to go down the river. It is 

 sometimes caught in the Kentucky as late as November. It 

 affords a tolerably good food. Snout very short yet somewhat 

 attenuated, barbs brown, eyes nearly round, bead with a depres- 

 sion above, lips very tbick. Scales radiated knobby behind. 

 Pectoral and anal fin somewhat oboval, the abdominal aiid dor- 

 sal trapezoidal. 



99th Species. Ohio Sturgeon-. Jcci/unser ohiensis. Etur- 

 geon del' Ohio. 



Head conieaT one fifth of total length, snout sloping short 

 Dearly acute, eyes round. Body cylindrical rough olivaceousi 

 fulvous, belly v. Lite. Tail short lunulate falcate. Dorsal 

 scal«s licarinated, the lateral rows with 34 dimidiated and un- 

 qual. 



Somewhat similar to the foregoing. Length from three to 

 four feet. Found as far as Pittsburgh, comes in the spring, and 

 goes away in September. Head convex above, with a protuber- 

 ance on the top. All the fins tiv.puzoidal but somewhat falcate. 

 The tail remarkably so, and obliquely lunulate, t he lobes not di- 

 vided by a nouli^ &-" t iUaIi,,i^ /|he other species . It has been 

 mentioned by Lesueur as a variety of his »{?. rubicundtis, page* 

 S90 of the Trans. Am. Phil. Society, bu f . it differs widely from 

 it. 



100th Species. Bigmouth Sturgeon. Jlccijicuser macros- 

 t«7nus. Eturgeon beant. 



Head one fourth of total length, snout elongated, somctvhat 

 flattened, eyes round. Body cylindrical deep brown above. 

 white beneath. Tail elongated; about 20 dorsal scales, seve- 

 ral between the dorsal and anal fin, about 30 scales in each lat ! 

 cral row. 



I have not seen this species, but Mr. Audubon has commu- 

 nicated me a drawing of it. It is only found in the low er parts 

 oi the Ohio, and reaches four feet in length. G^od food, 

 Mouth large gaping, hanging down, retractable. Gill cover 

 «blong. Tail slender, the lower lobe very small. Fins trapc- 



