PSYCHE, 



A. JOXJK.Kr.AJL. OF E2SrT0:M:0]L.00"S^. 



[Established in 1874.] 



Vol. 6. No. 175-176. 



NovEMBEK — December, 1890. 



CONTENTS: 



Advertisements ............. 



Notes on some Ahhid Structures. — John B. Smith .... 



Notes on Two Species of Datana with Descriptions of their Larval 



Stages. — Harris^oji G. Dyar ......... 



The Number of Molts of Lepidopterous Larvae — Harrison G. Dyar 

 Descriptions of New West African Lycaenidae. — W. y. Holland 

 Some Genera of OedipodidAe Rescued from the Tkyxalidae. — Samuel 



Hubbard Scudder ........... 



Lowne's Anatomy of the Blow-fly. - 



Hydrocyanic Acid Secreted by Polydesmus virginiensis. Drury. — IVil- 



I tarn M. Wheeler . . ....... 



408 

 409-414 



414-420 

 420-422 

 4^3-431 



431-442 

 442 



442 



Published by the 



CAMBRIDGE ENTOMOLOGICAL CLUB, 



Cambridge, Mass., U. S. A. 



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



[Entered as second class mail matter.] 



