66 



convex above. Operculum fiexuose. Tall- with 24 i-ays. Dor^ 

 sal vvi^h one and 7. Spines short. 



77ih Species. Black Catfish. Fimelodus melas. Pime* 

 ifode noir. 



Jaws nearly eqnril. Eyes round. Barbs unequal, shorte? 

 than the*head. Body entirely black, lateral line strai^it. Anal 

 iin with 20 rays. Tail nearly truncate, entire. 



Silurus melas. Monogr. sp. 8. 



A rare species less than a foot long. Hardly pale beneatki. 

 Dorsal fin I and 7. Found below the fails. 



78th Species. Yellow head Catfish. Pi7nelodus xanr 

 thocejihalus. Pimelode xanthocephale. 



Upper jaw longer. Barbs unequal shorter than the head. 

 Eyes round. Body iron grey, with the whole or part of the 

 head yellow. Beliy white. Lateral line straight. Anal fin 

 with 22 rays. Tail entirely truncate. 



Silurus a-anthrocephalus. Monogr. sp. 10, 



About a foot long. In the Ohio, Kentucky, Sec. Head very 

 large, often entirely yellow, or only forward, or covered with 

 yellow patches. Iris white. Fins fleshy redish. The dorsal 

 with 1 and 6 rays, caudal 24. Good food. 



4th Section. Ilictis, Tail entire, eyes elliptical. Nine 

 abdominal rays. Dorsal fins submedial. Pectoral fins with 

 one flat spine serrated outwards, and nine rays. Lower ja\r 

 longer. 



79th Species. Mud Catfish. Fimelodus limosus^ Pime?- 

 lode bourbeux. 



Lower jaw longer. Barbs black, the lateral ones reaching^ 

 the pectoral fins. Body fulvous, variegated or clouded with, 

 black, belly grey. No lateial line. Anal fin with 15 rays. 

 ^Tail entire oval obtuse. 



^iiuriis limosus. Monog. sp. il. 



A very singular species, diiTering from all others by the long 

 lower jav/, £cc: Leugth about one foot. It has a slender body 

 of a rufous brown mixed with black. It is found in the muddy 

 streams, and near the muddy^banks of large rivers. Dorsal fin 

 opposite the abdominal, with one spine concealed under the skia 

 and six r^iys. Braiichial membrane apparent outside. Pecto- 



