FIELD COLUMBIAN MUSEUM 



PUBLICATION 7. 

 ZOOLOGICAL SERIES. VOL. i, No. 2. 



ON CERTAIN PORTIONS OF 

 THE SKELETON 



OF 



PROTOSTEGA GIG AS. 



BY 



O. P. HAY, PH. D., 

 Assistant Curator of Ichthyology. 



D. G. ELLIOT, F. R. S. E., Curator of Department. 



CHICAGO, U. S. A. 

 November 21, 1895, 



