112 NEW YORK STATE MUSEIUM 



mon in Oneida lake. The species is considered identical with 

 ]M X o s t o m a a u r e o 1 n m , His description shows a very 

 close agreement with that of a u r e o 1 u m given above. 



The food of the red horse consists chiefly of mollusks and in- 

 sects. It is not a choice food fish. 



Eugene Smith^ records this form as occurring in the vicinity 

 of New York city. Mention has already been made of the doubt 

 concerning the northern limits of the range of m a c r o 1 e - 

 p i d o t u m ; but for the sake of comparison the brief descrip- 

 tion of m a c r o 1 e p i d o t u m published by Jordan and Ever- 

 mann is given herewith. 



Head moderate, rather stout, its length four and three fifths 

 in body; eye one and two thirds in snout; dorsal fin with its free 

 edge concave; scales usually with dusky shade at base; lower 

 fins pale. Streams about Chesapeake and Delaware bays, and 

 southward to North Carolina. It seems in some respects inter- 

 mediate between M. a u r e o 1 u m and M. c r a s s i 1 a b r e , 

 but we can not at present identify it with either. 



Family cyf-rinidae 



Carps 



Genus campostoma Agassiz 



Body moderately elongate, little compressed; mouth normal, 

 the jaws with thick lips and rudiment of a hard sheath; pre- 

 maxillaries protractile; no barbel; teeth 4-4, or 1, 4-4, 0, with ob- 

 lique grinding surface, and a slight hook on one or two teeth; 

 air bladder suspended in the abdominal cavity and entirely sur- 

 rounded by many convolutions of the long alimentary canal, 

 which is six to nine times the total length of the body; ovaries 

 similarly enclosed by the alimentary canal; peritoneum black; 

 I)s<'udobranchiae present; scales moderate*; lateral line present; 

 dorsal nearly over ventrals; anal short; no spines. Herbivo- 

 rous. Sexual dilferences very great, the males being: covered 

 Willi lai-gc 1iil)('rcles in spi'ing. The singular arrangement of 

 1li<- inteslincs in rchiliou to tlic air bladder is peculiar to C a m - 



I'f'Stojiia : .n<r all known fishes. (After Jordan and Ever- 



nianri) 



I. mil. So.-. N. Y. Proc. 1807. no. 0. p. 14. 



