58 



large one between the dorsal and caudal fins: lateral line straight 

 dorsal fin with 14 rays, anal with 9 rays. 



A singular species seen at the falls. It is rare and called 

 Spotted Sucker or Black Sucker. Length from four to six 

 inches; body cylindrical, flattened beneath as far as the vent. 

 Head flat above, blackish there and in the fore part. Mouth 

 almost terminal with thick whitish lips, the lower one shorter 

 and thicker, a few small black spots on the sides of the head 

 and a large one on the preopercule. Gill cover silvery. Eyes 

 black, iris brown with a gold ring. Back of a rufescent colour, 

 with gold shades. A very large black patch above the anal fin 

 before the tail. Sides pale with small unequal black dots, bel- 

 ly whitish; Fins coppery, the pectoral elliptical elongated with 

 l8 rays, the anal elongated reaching the tail, the dorsal broad 

 and opposed to the abdominal. Tail with 20 rays. Scales ra- 

 ther large ncrvosc radiated. 



61st Species. Bla.ck-ba.ck Sucker. Catostotnus melanotu*. 

 Catostomc mclanote. 



Diameter one six'h of the length: bluish black above, whitish 

 beneath; head convex, snout obtuse: lateral line straight: dor- 

 sal and anal fins with nine rays. m 



Seen only once at the falls. Length six inches, body nearly 

 cylindrical. Mouth rather inferior, lips thick and somewhat 

 gristly. Iris silvery. Scales pretty large. Tins whitish, the dor- 

 sal and caudal a little redish. Pectoral fins elliptical with 16 

 rays- Tail 20. Dorsal fin trapezoidal, opposed to the abdom- 

 inal, the first ray shorter. Anal elliptical obtuse. Vulgar names 

 Black Sucker and Blue Sucker. 



62d Species. Rough-head Sucker, Catostojnus fasciolarls. 

 Catostomus fascie. 



Diameter one sixth of the length: brown above, white be- 

 neath, sides with small transversal black lines: head sloping 

 tuberculated above, snout obtuse: dorsal fin longitudinal reach- 

 ing the end of the anal fin, lateral line straight. 



I have not seen this species, but describe it from a dra.ving of 

 Mr Audubon It is found in the lower partpf the Ohio. Vul- 

 gar names Rough-head Sucker^Pike Sucker, Striped Sucker. 

 Length about eight inches, body cylindrical tapering behind. 



