NEW BRACHIOPODS OF THE GENUS SPIRIFER 

 FROM THE SILURIAN OF MAINE 



BY 



HENRY SHALER WILLIAMS 



Of Cornell University, Ithaca, New York 



No. 2144. — From the Proceedings of the United States National Museum, 

 Vol. 51, pages 73-80, with Plate 1 



Published December 16, 1916 



DECl 61916 



Washington 



Government Printing Office 



1916 



