PORI. 



736 



Porcellia ? ( Oyroceras) nais, Hall. 15th Annual Report, 



1862, page 68, plate 6, figs. 5, 6 ; strongly marked species, dif- 

 ferent from all others in VIII; and it cannot be a GyroGerat 

 because it shows no m^tdi.— Chemung formation^ VIII g* 



Porcellia crassinoda; hertzeri ; nodosa; obliquinodus ; 

 peoriensis ; rectinoda ; and ^ci^j^o, are other species. 



Porites, (with cavities left by the dissolution of crystals of 



V. 2.7. ^^^^' ^^mrmmimp'f^ 8elenite(?) Hall. Geol- 

 ogy of Western New 

 York, 1843, page 91, fig. 

 27. Niagara formation. 

 Vh, 



Porites is a genus es- 

 tablished by Lamarck 

 in 1816, Hist, des ani- 

 maux sans vertebres. It 

 is not an American Pa- 

 lasozoic genus (S. A. 

 Millef). 



V.2J.3. 



