( cxxv ) 



British, Kliopaloeera, exhibited, iv ; Elutcr, new, exhibited, xvii ; Siricids, 

 photographs of ovipositors of three, exhibited, xxi ; Vecidotiiyidae, with 

 special reference to the Northern Gall-Hies, preliminary catalogue of, 

 xxiv, 34G ; Coccids, two new, exhibited, xxiv ; beetle, very rare, exhi- 

 bited, 1 ; specimen of XutodonUt hicoloria, exhibited, 1; Cluf/sopluuius 

 dispar var. rutihis, exhibited, Ixxii. 

 British Guiana, notes on buttertly migrations in, xvi, 154 ; Hymenoptera 



(exclusive of the Formicidae), notes on some, 297. 

 British Museum, new species of Hymenoptera in the, 53. 

 Butterflies, note on mimicry in Oriental, ix ; in British fJuinna, notes on 

 migrations of, xvi, 154; supposed hybrid, exhibited, xvi ; resemblance in, 

 mimetic and non-mimetic, exhibited, xxviii ; on the wing captured by 

 birds at Oxford, xxix ; taken in East Africa, on a collection of, xl vi, 322 ; 

 nuptial flight of, exhibited, li ; by birds are rarely witnessed, observation 

 explaining why attacks on, Ixii ; in midst of dry season, suggested ex- 

 planation of wet-scasou forms of, Ixiii; another independent observation 

 of the '• false head " in, Ixv. 

 Bye-law, new, read, i ; special meeting to consider, viii. 

 Cali(/o, genitalia of certain species of, exhibited, xix. 

 Caraphractns cinctus taken at Oxford in 1917, Ixxxiv. 

 Cecidomyidae, with special reference to the Northern Gall-flies, preliminary 



catalogue of British, xxiv, 346. 

 L'etoiiiidiie, from British India, new, exhibited, xiv ; additions to knowledge 



of, xvi, 102 ; from Madagascar, exhibited, xix. 

 Chaerocampa elpenor, larva of, exhibited, xci. 

 Chn/sophaiius dispar var. rutilus, British, exhibited, Ixxii. 

 Coccids, two new British, exhibited, xxiv. 



Coleoptera, on unusual -food-plants, exhibited, xlvi ; of the Families Osto- 

 midae, Monotoinidae, Colydiidue and Xotiophysidac from the Seychelles 

 and Aldabra Islands, xeiv. 

 Colydiidae and Xotiophysidae from the Seychelles and Aldabra Islands, 



Coleoptera of the Families Ostomidae, Monotomidae, xciv. 

 Council, death of member of, announced, viii ; nomination of, Ixxv. 

 Dawn, reappearance of sunset insects at, xvii. 

 Death-watch beetles, xvii, xxiii ; exliibited, xviii. 

 Dermestid Beetle, living larvae of, exhibited, 1. 

 Dicramira vinula, cocoon of, exhibited, Ixxi. 

 Diptera, with special reference to the Gall-midges of the North of England, 



preliminary catalogue of British Cecidomyidae, x.xiv, 34t). 

 Dytiscus maryiiuilis, pupation of, exhibited, Ixxiii. 

 East Lothian, aberrations of Geometrid moths from, exhilnted, Ixxvi. 

 Eluter, new British, exhibited, xvii. 

 Fellows, election of, i, xvi, xviii, xix, xxiv, xlvi, xlviii, li, Ixxii, Ixxv ; interned 



in Germany, letter from, xlv. 

 Food-plants, Coleoptera on unusual, exhibited, xlvi. 

 Fonnicidai', notes on some British Guiana Hymenoptera, exclusive of the, 



297. 

 Fossors, with their prej', from the S. Paulo district of Soutli-East Brazil, 

 predaceous Reduviid bugs and, exhibited, xxxiv ; in East Africa, observa- 

 tions on, xli. 



