Table of Contents. 



VOLUME XVII. 



Proceedings, i, 189 



Annual Meeting, 1 



Donations, 3, 193 



Report of Director of Museum, 4 



List of Corresponding Societies, etc., 6 



Programme Thirteenth Course Free Scientific Lectures, 17 



Report of Treasurer, 18 



Trustees' Report, 19 



Report of Curator of Photography, 20 



New Species of Fossils from the Hudson River Group, and Re- 

 marks upon Others. By S. A. Miller and C. L. Faber, 22 



Biological Notes on Reared Parasitic Hymenoptera of Ohio and 

 Indiana, with Descriptions of Thirteen New Species, by W. H. 



Ashmead. By F. M. Webster, M. Sc., 34 



The Petrified Forest of Arizona. By S. A. Miller, 56 



The Granites of Cecil County, in North-eastern Maryland. By 



G. Perry Grimsley, 59, 78 



Natural History Notes from North Carolina. Number Three. By 



A. G. Wetherby, 69 



St. Peter's Sandstone. By Jos. F.James, 115 



Description of Some Cincinnati Fossils. By S. A. Miller and C. L. 



Faber, 137 



Studies of the Development of Fidi viticida Walsh, with Descrip- 

 tions of One New Genus and Two New Species of Hymenop- 

 tera, by Wm. H. Ashmead. By F. M. Webster, M. Sc., . . . . 159 

 The Preparation and Care of Insect Collections. By Chas. Dury, . 173 

 An Account of the Chimpanzees {Troglodytes Niger) at the Cin- 

 cinnati Zoological Garden. By Charles Dury, 181 



Catalogue of the Odonata of Ohio. Part I. By D. S. Kellicott, . . 195 

 The Shaw Mastodon. An Examination and Description of Masto- 

 don and Accompanying Mammalian Remains Found near Cin- 

 cinnati, June, 1894. By Seth Hayes, 217 



Photography: Its Possibilities in the Art-Field. A Lecture Before 



the Photographic Section. By Leon Van Loo, 227 



Another Miami Valley Skeleton. Including a Description of Two 

 Rare Harpoons. By Seth Hayes, 235 



