41 NEW YORK STATE MUSEUM 



Buchiola scabrosa sp. nov. 



Page 299 



25-27 Three views of a left valve showing convexity, the scabrous 

 character of the recurved growth lines on the ribs over the 

 median portion of the shell. X5 

 28 Another right valve. X3 



Naples subprovince Honeoye lake 



Buchiola angolensis sp. nov. 



Page 300 



20, A left valve showing fine concentric lines and coarser concen- 

 tric furrows, also the rounded ribs and narrow grooves. X3 



30 Left valve. X2 



31 A left valve having one dichotomous rib. X2 



32 A portion of the surface. x6 



Chautauqua subprovince 



Big Sister and Farnham creeks, Lake Erie 



33 A small left valve with strong concentric grooves, referred 



with some doubt to this species. X3 



Chautauqua subprovince Forestville 



Buchiola lupina sp. nov. 



Page 301 



34 A left valve. x6. The character of the ribs in this specimen 



is more like that shown on figure 36. 



35 A portion of the surface of another valve. Enlarged 



36 A left valve with rounded spreading ribs and fine concentric 



lines. X4 



Cashaqua shales Mouth of Wolf creek near Mt Morris 



