NAPLES FAUNA IN WESTERN NEW YORK, PART 2 393 



Lunulicardium beushauseni sp. nov. 



[See pi. 4] 

 Page 243 



12 A left valve showing the orbicular outline, low, coarse pos- 



terior ribs, and generally smooth surface. x2 



13 A right valve with radial plications on the posterior surface. 



X2 



Chautauqua subprovince Forestville 



Lunulicardium (Prochasma) enode sp. nov. 



Page 242 



14 A right valve showing the relatively long and oblique sical 



margin. X3 



Genesee valley Lower Portage falls 



Lunulicardium (Prochasma) absegmen sp. nov. 



Page 242 



15 A right valve showing the subcircular marginal outline and 



relatively broad posterior slope. X2 



Chautauqua subprovince Correll's point, Lake Erie 



Lunulicardium cf. inflatum Holzapfel 



16 Internal cast of right valve preserving the mantle line, an 



apparently posterior muscle scar and a depression at the 

 umbo corresponding to an internal thickening of the valve. 

 Intumescens zone Martenberg, Westphalia 



Lunulicaidium (Prochasma) parunculus sp. nov. 



[See pi. 4] 

 Page 243 



17 A left valve with highly arched sica and faint radial lines. 



xi. 5 



18 A right valve showing the usual form and incurved post- 



umbonal margin, xi.5 



19 A similar valve of this species, xi.5 



Naples subprovince Naples 



