PSYCHE, 



A. JOXJRKTAL OF ErTTO]yLOLOG}-"Y. 



[Established in 1S74.] 



Vol. 5. No. 170 



June, 1S90. 

 CONTENTS: 



Advertisements ............. 350 



The Life-history of Sierarctia echo. — Alphens Spring Packard . . -351-353 



Two Species of Aeschna. — Hennami August Hagen 353-355 



Descriptions of some new North American Dolichopodidae. — William 



M. Wheeler ... .......... 355-362 



The Fossil Insect Localities in the Rocky Mountain Region. — Samuel 



Hubbard Scudder ............ 363 



Entomological Notes ' . . 363-364 



Published by the 



CAMBRIDGE ENTOMOLOGICAL CLUB, 



Cambridge, Mass., U. S. A. 



YEARLY SUBSCRIPTIONS, $2. VOLUME, $5. MONTHLY NUMEROS, 30c. 



[Entered as second class mail matter.] 



