282 TRANSACTIONS OF THE [MAR. 15, 



The Mississippian series was typically deposited not only 

 along the line of the present Mississippi River, but off the 

 shores and wholly' surrounding the ancient Ozark Island. The 

 deposition varied more or less off the different shores of the 

 island, especiall}^ daring the latter half of the period, when the 

 body of land ceased to be entirely surrounded by water, by be- 

 ing partially or wholly joined to the mainland toward the north ; 

 the lower formations, however, included in the Kinderhook and 

 Osage groups, may be expected to have a similar development 

 on all sides of the ancient island. 



Conclusion. 



After a careful investigation of both the palreontologic and 

 the stratigraphic evidence, it is believed that the position of the 

 Batesville Sandstone is definitel3^ established as the equivalent 

 of the Aux Vases Sandstones of southern Illinois and south- 

 eastern Missouri. 



The paleontologic evidence also points to the equivalence of 

 the Batesville Sandstone and the Maxville Limestone of Ohio, 

 but in this case the evidence can not be strengthened by a com 

 parison of the stratigraphy of the two regions involved. 



Walker Museum, University of Chicago, 

 January 13, 1897. 



NEW SPECIES AND A NEW GENUS OF AMERICAN 

 PALAEOZOIC FISHES. TOGETHER WITH NOTES 

 ON THE GENERA ORACANTHUS, DACTYLODUS, 

 POLYRHIZODUS, SANDALODUS, DELTODUS. 



By John Strong Newberry. 



[From a nearly completed MS. (1890-1891), edited by Bashford Dean.] 



Introduction. 



Professor Newberry was enabled to almost conclude his ex- 

 tended investigations upon the fossil fishes of North America 

 by the publication of his monographs on the Pala?ozoic * and 

 Triassic f fishes. During the last few years of his life he de- 

 voted almost his entire attention to the study of the plants of the 



* Monograph XVI., U. S. Geol. Siirv., 1S89. 

 t Monograph XIV., U. S. Geol. Surv., 1888. 



