Contents of Volume XX. 



Aldrich, J. M., 



Larvae of a Saturniid Moth used as Food by California 

 Indians 28 



The Biology of Some Western Species of the Dipterous 

 Genus Ephydra yj 



Two Western Species of Ephydra 99 



Alexander, Chas. P., 



A Revision of the Genus Brachypremna Osten-Sacken. . . 225 

 Alexander, C. P.. and Leonard. M. D., 



\'enational \'ariation in Cladura 36 



Davis, Wm. T., 



Notes on the Distribution of Several Species of Tiger 

 Beetles 17 



Three New Species of Belocephalus from Florida 122 



Davis, Wm. T., and Leng, C. W., 



Insects on a Recently Felled Tree 119 



Fall, H. C., 



A Revision of the North American Species of Collops. . . . 249 

 Felt, E. P., 



New Itonididae 102 



New Gall Midges or Itonididae 146 



Studies in Itonididae 236 



Fenyes. a., 



Falagria Mann, and Its Relatives 20 



FuLLAWAY. David T., 



Gail-Fly Parasites 274 



GiRAULT, A. A., 



The Occurrence of the INIymarid Genus Stephanodes 



Enock in North America 40 



Grossbeck, John A., 



IMiscellaneous Notes and Descriptions of North American 



Geometridje 282 



iii 



