LIST 0¥^ PAPERS. 



Bassett, H. F. page 



New species of North American Cynipidge . . .59 



Calvert, Philip P. 



Notes on some North American Odonata, with descrip- 

 tions of three new species ...... 33 



DiETZ, W. G., M. D. 



Notes on the species of Dendroctonus of Boreal America. 27 



Hagen, Dr. H. A. 



A Synopsis of the Odonat genus Leucorhinia Britt. . 229 



Horn, G. H., M. D. 



The species of Heterocerus of Boreal America . . 1 



Notes on the species of Ochthebius of Boreal America . 17 



Notes on some Hydrobiini of Boreal America . . 237 



A Revision of the Sphseridiini inhabiting Boreal America 279 



Some Notes on Ar?eoschizus ...... 339 



<S HuLST, George D. 



The Phycitida? of North America 93 



Robertson, Charles. 



New North American Bees of the genera Halictus and 

 Prosopis .,....••• 315 



Smith, John B. 



Descriptions of some new species of Agrotis Auct. . 41 



A contribution toward a knowledge of the Mouth-parts 

 of the Diptera ........ 319 



