CONTENTS OF VOL. VII. 



NUMBER II. 



Akt. II. — Observations upon the Geology and Paleontology of 

 Burlington, Iowa, and its vicinity. By Cuaulks A. 

 White 209 



Art. in. — On the Hymenoptera of the" genus Atlantus in the 



United States. By Edwakd Norton . . . 236 



Art. IV. — Descriptions of new species of Crinoidea from the 

 Carboniferous Rocks of the Mississippi Valley. By 

 James Hall 261 



