NAPLES FAUNA IN WESTERN NEW YORK, PART 2 427 



Genus carinaropsis Hall 



Page 323 



Carinaropsis ithagenia sp. nov. 



Page 323 



18 An external cast showing the umbonal platform 



20 Internal cast of the same, showing that the platform is 

 medially ridged 

 Ithaca beds Canasawacta creek, Norwich 



19 The interior of a larger specimen 



Ithaca beds Brookins quarry near Norwich 



