CONTENTS. 



PA OF. 



Explanation of the plates ... ... ... ... ... ... ... viii 



Errata and Addenda ... ... ... ... ... ... ... ... viii 



List of Fellows... ... ... ... ... ... ... ... ... ix 



Additions to the Library ... ... ... ... ... ... ... xxiii 



MEMOIR S. 



I. Descriptions of new species of Oriental Rhyacojihilw. By 



Kenneth J. Morton, F.E.S. 1 



II. Lepidoptera Heterocera from Northern China, Japan, and Corea. 



Part III. By John Henry Leech, B.A., F.L.S., F.Z.S. ... 9 



III. Undescribed Genera and Species belonging to the Rhynchotal 



Family Pentatomidm. By William Lucas Distant 163 



IV. On Pleurostict Lamelllcorns from Grenada and St. Vincent (West 



Indies). By Gilbert J. Arrow, F.E.S 175 



V. On the Butterflies of Bulgaria. By Henry John Elwes, F.E.S. , 



F.L.S., ETC 183 



VI. Report upon the Aculeate Hymenoptera of the Islands of St. 



Vincent and Grenada, with additions to the Parasitic Hymen- 

 optera and a List of the described Hymenoptera of the West 

 Indies. By Willlam H. Ashmead 207 



VII. New Palsearctic Pyralidx. By Sir George F. Hampson, Bart., 



B.A., F.Z.S 369 



VIII. Note on the habits and structure of Accoithojisyche opacella, 



H.-Sch. By Thomas Algernon- Chapman, M.D^., F.Z.S. ... 403 



IX. Life Histories in the Hepialid Group of Lepidoptera, with 

 Description of one New Species, and Notes on Imaginal 

 Structure. By Ambkose Quail, F.E.S 411 



X. Stridulating Organs in Coleoptera. By Charles J. Gahan, M.A. 433 



XL Descriptions of New Species and a New Genus of South American 



Eumolpidw. By Martin Jacoby, F.E.S 453 



XII. Lepidoptera Heterocera from Northern China, Japan, and Corea. 



Part IV. By John Henry Leech, B.A.,F.L.S., F.Z.S. ...511 



XIII. Contributions to a Knowledge of the Rhynchota. By William 



Lucas Distant ... 665 



Proceedings for 1900 i— sxxii 



Annual Meeting xxxiii 



President's Address ... ... ... ... ... ... ... xxxix 



Index Ixi 



