NATURAL SCIENCES OF PHILADELPHIA. 425 



NOTES ON THE GENUS CONCHIOPSIS, Cope. 

 BY J. S. NEWBERY. 



In the Proceeclings of the Academy of Natural Sciences 

 (1873, Part II. page 340), I fiiul descriptions b}^ Prof. Cope 

 of some fossil fishes from the Coal Measures of Ohio, which 

 seem to require a word of comment. A large collection of am- 

 phibian remains w4iich I obtained from Ohio, I sent to Prof. Cope 

 for description, informing him that the fossil fishes found with 

 them had been, or would be, described by m3^self. Among the 

 amphibian remains sent to Prof. Cope a few fishes were accidentally 

 included. These he has described in the place referred to. To 

 receive them he has constructed the new genus Conchiopsis, Cope, 

 and describes under it three species ; G. filiferua^ Cope ; G. angu- 

 liferv,s^ Cope, and G. exanthematicvs, Cope. He also describes 

 another genus, Peplorhina^ of which he defines one species (P. 

 anthracina^ Cope). Since these descriptions were published, the 

 specimens have been returned to me. On examining them, I find 



1st. That Prof. Cope's genus Conchiopsis is identical with 

 Agassiz's G eel acanthus, described in his Foissons Fussiles, Tom. 

 II., Par. 2, page ITO. Tiie genus is still further and more 

 fully illustrated by Huxley in The Memoirs of the Geological 

 Survey of the United Kingdom, Decades X and XII. 



2d. Prof. Cope's species G. filiferus and G. anguliferus, both 

 belong to the species Gcelacanthus elegans, described by me in the 

 Proceedings of the Acad, of Nat. Sciences, Philadelphia, April, 

 ] 856, and more fully illustrated in the first volume of the final 

 report of the Geological Survey of Ohio, Part II.,Pali3eontolog3', 

 page 337, pi. 40. 



3d. The "gular plates" referred to by Prof. Cope in his descrip- 

 tion of Gonchiopsis, &,re reallj' the opercula ; the jugular plates 

 which he has apparently not seen are long elliptical, some- 

 times almost linear in outline. 



4th. The dentition which Prof. Cope attributes to Gcelacanthus 

 {Gonchiopsis, Cope) is not the true dentition of the genus, as he 

 has drawn his inference from the dentition of his G. exanthema- 

 ticus, which is not a Gcelacanthus. 



5tli. The species referred to above, Gonchiopsis exanthematicus, 

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