NAPLES FAUNA IN WESTERN NEW YORK, PART 2 409 



16 Enlargement of the surface of another valve. X5 



Hamilton shale Cayuga lake 



Buchiola ? (Puella ?) sp. 



17 A flattened valve with numerous ribs and fine, more or less 



continuous concentric striae. The relations of this shell 



are quite uncertain. X3 



Naples subprovince Rhinestreet shales, Naples 



Buchiola cf. prumiensis Steininger 



Page 302 



18, 19 Valves of the same example showing the distinctive char- 

 acters. X3 

 Chautauqua subprovince Big Sister creek, Angola 



Buchiola conversa sp. nov. 



Page 300 



20 Expanded valves. X4 



Chautauqua subprovince Farnham creek, Lake Erie 



2 1 A right valve. X3 



Chautauqua subprovince Angola 



22 A right valve showing the subcircular outline, the broad and 



concave ribs with elevated edges and very narrow interven- 

 ing furrows. X5 

 Chautauqua subprovince Big Sister creek, Angola 



Buchiola stuprosa sp. nov. 



Page 298 



23, 24 Expanded valves of two individuals bearing (in figure 23 in 

 later growth only) the very fine concentric striation, the ribs 

 being broadly rounded without sharply defined edges and 

 with very narrow intervening grooves. X4. These are speci- 

 mens figured among the illustrations of Glyptocardia 

 speciosaby Hall [Pal. N.Y. v.5, pt 1, pi. 70, fig.?, 3]. 

 Genesee shale Bristol 



