CONTENTS. 



Descriptions ot" new genera and new species of Hynienoptera 



from Mexico. By P. Cameron .... 251 



A Contribution to the Study of American Dolichopodidse. 



By J. M. Aldrich ." . . . . . .269 



North American Tortricida; — Genus Polychi'osis Rag. By 



W. D. Kearfott . . . ' . . . .287 



623 



