40 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY 1. 



* 77th species, Black Catfish, PIMBLODU3 MELAS, Pimelods noir. (p. 06.) 



Amiurus iviELAS (liaf.) Jordan. 



Amiuriis ohesus Gill. 



t 78th species, YeUow-Head Catfish, PIMELODUS XANTHOCEPH&.LUS, 

 Pimelode xanthocephale. (p. 68,) 



Amiurus xanthocephalus (Raf.) Gill. 



4th section, ILICTIS. (p. 66.) 



Tail eutire, eyes elliptical. Niue abdominal rays. Dorsal fins sub- 

 medial. Pectoral fins with one flat spine serrated outwards and nine 

 rays. Lower jaw longer. 



79th species, Mud-Catfish, PIMELODUS LIM0SU3, Pimelode bourbeus. 

 (p. 66.) 



Pelodichthys olivaris (Raf.) Gill & Jor. 



tXXIII. Genus, MUDCAT, PILODICTIS, Pylodicte. (p. 67.) 



PYLODiCTisRaf., 1819. 

 Opladelus Raf., 1820. 



nOPEADELUS Gill, 18G1. 



PELODicnTHYS Gill & Jordan, 1877. 



* Jaws nearly equal. Eyes round. Barbs unequal, shorter than the head. Body 

 entirely black, lateral line straight. Anal liu ^vith 20 rays. Tail nearly truncate, 

 iuitire. 



iSlhirus mclas, Monogr. sp. 8. 



A rare species less than a foot long. Hardly pale beneath. Dorsal fin 1 and 7. 

 Found below the falls. 



t Upper jaw longer. Barbs unequal, shorter than the head. Eyes round. Body iron 

 gray, with the whole or part of the head yellow. Belly white. Lateral line straight. 

 Anal fin with 22 rays. Tail entirely truncate. 

 ISilurus xanthocephalus, Monogr. sp. 10. 



About a foot long. In the Ohio, Kentucky, etc. Head very large, often entirely 

 yellow, or only forward, or covered with yellow patches. Iris white. Fins fleshy 

 reddish. The dorsal with 1 and 6 rays, caudal 24. Good food. 



tBody scaleless, conical, flattened forwards and compressed behind. Head very 

 broad and flat, with barbs, eyes above the head. Two dorsal fins, both with soft rays. 

 Vent po.sterior. 



This genus was the 10th of my Prod, of 70 N. G. of animals. The name means 

 Mudfish. It differs principally from the foregoiug by the second dorsal having rays. 



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