NAPLES FAUNA IN WESTERN NEW YORK, PART 2 369 



Ontaria concentrica v. Buch. In the Adorf limestone and the Portland 

 shale. 



O. clarkii Beushausen. In the shales at Oberscheld and at Naples. 



Posidonia venusta Miinster. This species occurs in the Cypridina shales 

 of Westphalia and the Hartz, in the Clymenia limestone of Poland and the 

 van n i t i d u 1 a in the Portland shales. 



Tentaculites tenuicinctus Sandberger. In the lower horizons " Gonia- 

 tite limestone " of Poland, Adorf limestone and the Cashaqua shales of 

 Naples. 



Cordaeoxylon clarkei Dawson. Very common in the Genundewa lime- 

 stone and occasionally in the Cashaqua shales of Ontario county. Dawson 

 in late papers regarded this as probably identical with Aporoxylon 

 primigenium Unger from the Cypridina shale of Thuringia. 



Cyclostigma affine Unger. In the Cypridina shale of Thuringia and 

 the Genundewa limestone. 



Cladyoxylon mirabile Unger. In the Cypridina shale of Thuringia and 

 the Genundewa limestone. 



Kalymma grandis Unger. In the Cypridina shale of Thuringia and 

 the Black shale of Moreland Ky. 



Spathiocaris emersoni Clarke. Common in Timan and in the gray and 

 black shales of New York and Indiana. 



Cardiocaris. In the black shales at Biidesheim and in New York. 



Dipterocaris. In the black shales and limestone of Biidesheim, Timan 

 and New York. 



The correspondence of these identical species with reference to sequen- 

 tial position is noteworthy. Restated in tabular form they are thus : 



