NEW BRACHIOPODS OF THE GENUS SPIRIFER 

 FROM THE SILURIAN OF MAINE 



BY 



HENRY SHALER WILLIAMS 



Of Cornell Unirerslty, 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 



DEC I 61916 



Washington 



Govtrnment Printing Office 



1916 



