and reticulated veins forming an hexagonal net\tork. Body en- 

 tirely o'^^o brown. 



PlatiroHra edentula^ Lesueur in Journ. Ac. Nat. Sc. Phila-^ 

 delphia, VoIuitip. 1, page 229. 



This fish is still more rare than the foregoing, but found oc- 

 casionally as far as Pittsburgh- It is larger, reaching from 3 to 

 5 feet and 50''bs weight. Not very good to eat. It has been so 

 fully described by Lesueur, that I need not do it again. The 

 indivif;lual which I saw was 40 inches long, head 20 inches, 

 snout 1 1 inches long and 1\ wide at the end, hardly cuniforra. 

 Eyes vixceedingly small and round. Gill cover oval radiated 

 as in ihe Sturgeons, wiihashort membranaceous flap, reaching 

 on! beyond the pectoral fins, &c. It is also called, along with 

 the forcicoing, Oarfibhand Spatula fish. 



XXXV Genus. Lamfrey. Prtromyzon. Lamproie. 



Body cylindrical scaleless, vent posterior. Two dorsal fins 

 and a caudal fin, no other fins. Seven branchial round holes oa 

 each side of the neck. Mouth terminal inferior acutiform, 

 tof thed. 



There are two or three species of Lampreys in the Ohio; but 

 they are very scarce and I have only seen one as yet. 



I04rh Species. BlA-CK. Lamprey- Petromyzon nigri»n. 

 Lamproie noire. 



Entirely blackish, tail oval acute, second dorsal over the vent, 

 several rows of teeth. 



A very small species, from four to five inches long; it is found 

 as high as Pittsburgh. Dorsal fins shallow, and distant from 

 each other and the tail. Eyes round and large. Branchial 

 holes small. No lateral line. Mouth oval, teeth white and 

 yellow. It torments sometimes the Buffaloe fish and Sturgeons, 

 upon which it fastens itself. It is never found in sufficient 

 f u^vntity to be vised aS food. 



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