iv. CONTENTS. 



ceum to the Arts and Sciences, Vol. 1, Philadelphia, 



1827,) 372 



A description of some new species of Hymenoptera of the 

 United States, (from Contributions of the Maclurian 

 Lyceum to the Arts and Sciences, Yol. 1, pp. 67 — 83. 

 Philadelphia, 1828,) 373 



Descriptions of new American species of the Genera Bu- 

 prestis, Trachys and Elater, (from Annals of the Ly- 

 ceum of Natural History of New York, Yol. 1, part 2, 

 1825, pp. 249— 268,) 386 



Additions and corrections, 401 



