PSYCHE, 



A. JOXJK,nsrA.1L. OF EKTTOlv^OLOa-ir. 



[Established in 1S74.] 



Vol. 5. No. 147-148. 



Ji'LY — August 1SS8. 



CONTBiVTS: 



Advertisements 74 



Ox THE Genus Cicadula, Zett — Charles^ William WoodxvoytJi .... 75-76 



The Study of Species and the Study of Cells — yames. Henry Emerton . . 77-7S 

 The Means Employed by Butterflies of the gexus Basilarchia for the 



perpetuation of the Species — Samuel Hubbard Scudder . . . 79-85 



Description of the Larva of Sphinx luscitiosa — Caroline G. Soitle . . S5-S6 



The Arrangement of the New Exglaxd Species of Thaxaos — Samuel Hub- 

 bard Scudder ............. S6-88 



The Use of Two Doors in a Trap-door Spider's Nest — George F. Atkinson . 8S-S9 

 Mating of Samia cvnthia ix Captivity — Caroline G. Soiile .... S9-90 



Insect Life ............... 90 



Bibliographical Record xo. 4503 — 4563 91-94 



EXTOMOLOGICAL ItEAIS ............. 95-96 



Published by the 



CAMBRIDGE ENTOMOLOGICAL CLUB, 



Cambridge, xvIass., U. S. A. 

 YEARLY SUBSCRIPTIONS, $2. VOLUME, $5. MONTHLY NUMEROS, 20c 



[Entered as second class mail matter.] 



