" 22 Belies the "Upper Salina" or the Rondout. When the fossils are studied it may prove that the line between 4 and 5 and 9 and 10 are not properly drawn. The one remarkable difference between the Pa. and N.Y. Coeymans is that Pectaculites sylacanthus continues to the end while in N.Y. it is restricted to the Marlies, on the end it may be established that most of the Coey- mans is better placed in the Libran. In N.Y certainly the upper 10 to 15 foot cannot be separated from the New Holland, since most of the species are common to both. In the lower Coeymans however the fauna is very dissimilar and may agree in N.Y. to be more Marlies than Coeymans. Certainly the Pectaculites and Mariacrines large clumps in Pa. occur in the Marlies as limited above.