81 



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

 5ft June and disappears in November, but is seldom caught, ex- 

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

 sometimes caught in the Krntucky as late as November. It 

 affords a tolerably good food. Snout very short yet somewhat 

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

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

 Pecioial and anal fin somewhat oboval, the abdominal and dor- 

 sal trapezoidal. 



99th Species. Ohio Sturgeox. jiccij'ienaer ohiensis, Etur-r 

 geon del' Ohio. 



Head conical one fifth of total length, snout sloping short 

 nearly acute, eyes round. Body cylindrical rough olivaceo'is) 

 fulvous, belly white. Tail short lunulafe falcate. Dorsal 

 scales Ucarinated, 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 springs and 

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

 ance on the top. All the fins trapezoidal but somewhat falcate. 

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

 vided by a notch as usual in the other species. It has been 

 mentioned by Lesueur as a variety of his A: rubicundus^ page 

 390 of the Trans. Am. Phil. Society, buUt differs widely from 



it. 



100th Species. Bigmouth Sturgeon, ^cci/ienscr macros- 



t9mus. Eturgeon beant. 



Head one fourth of total length, snout elongated, someivhat 

 ■Rattened, eyes rounds 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 latj 

 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 lower parts 

 of the Ohio, and reaches four feet in length. Good food. 

 Mouth large gaping, hanging down, retractible. Gill cover 

 •blong. Tail slender, the lower lobe very small. Fins trape- 



