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ORGAN OF THE CAMBRIDGE ENTOMOLOGICAL CLUB. 
[ Established in 1874. | 
hy BY Ad AY Say Be 
Gerorce Dimmock, Cambridge, Mass.; B: PickKMAN MANN, Cambridge, Mass. ; 
ALBERT J: Cook, Lansing, Mich.; CLirForD CHASE Eaton, Cambridge, 
Mass.; JosEpH DuNcAN Putnam, Davenport, Jowa; FRANCIS 
HunTINGTON Snow, Lawrence, Kansas; 
WITH THE ASSISTANCE OF 
W: Barnes, H: Epwarps, ROLAND Haywarpb, S: HENSHAW, A. ROBIN, FRANK G: 
ScHAupP, S: HuBBARD SCUDDER, ROLAND THAXTER, W: TRELEASE, 
H: WARD TURNER, JOSEPH MARTIN WILSON. 
Vol. 3. No. 85. 
May 1881. 
CONTENTS: 
ADVERTISEMENTS : : : : 3 : : ; : ~~ 9206 
Some PsocINA OF THE UNITED STATES—Hermann August Hagen - : 207-210 
PROCEEDINGS OF SOCIETIES — 52nd meeting of German naturalists and physicians 
in Baden-Baden 211 
BIBLIOGRAPHICAL RECORD . : : : : 212-214 
ENTOMOLOGICAL ITEMS — Society Meetings — Prize Essays ee : 215 
ADVERTISEMENTS - : . , - é : : : 3 . ; - SazTO 
CamsBripGE, Mass., U.S. A.: PusLtisHEp By GreorcE Dimmock. 
YEARLY SUBSCRIPTIONS, $1. MONTHLY NUMEROS, 15 c. 
[Entered as second class mail matter. ] 
