( cxxv ) 



Britisli, Hliopalocera, exhibited, iv; Elater, new, exhibitetl, xvii ; Siricids, 

 }ihotogi-ai)lis of ovipositors of three, exhibited, xxi ; Cecidoini/it/ae, with 

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

 xxiv, 346 ; Coccids, two new, exhibited, xxiv ; beetle, very rare, exhi- 

 bited, 1 ; specimen of Xotodonta hicolorin, exhibited, 1; i'lni/so^ihaiius 

 dis2)ar var. rutilus, exhibited, Ixxii. 

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



(exclusive of the Formicidae), notes ou some, 2i:*7. 

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

 Butterflies, note on mimicry in Oriental, ix ; in British Guiana, 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 ; tal<en in East Africa, on a collection of, xlvi,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-season forms of, Ixiii ; anotlier independent observation 

 of the '• false head " in, Ixv. 

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

 Ca/if/o, genitalia of certain species of, exhibited, xix. 

 C'la-aphructus cihctiis taken at Oxford in 1917, Ixxxiv. 

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



catalogue of British, xxiv, 346. 

 Cetoniidae, from British India, new, exhibited, xiv ; additions to knowledge 



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

 Chaerocampa elpenor, larva of, exhibited, xci. 

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

 Coccids, two new British, exhibited, xxiv. 



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

 midcie, Slonotomidae, Colydiidae and JVotiophysidaf from tlie Seychelles 

 and Aldabra Islands, xciv. 

 Colydiidae and JVotiophysidae 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 ; exhibited, xviii. 

 Dermestid Beetle, living larvae of, exhibited, 1. 

 fJicramira vinula, cocoon of, exhibited, Ixxi. 

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



preliminary catalogue of British Cecidomyidae, xxiv, 346. 

 Ijytiscus m«>-^i;(«^i.9, pupation of, exhibited, Ixxiii. 

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

 Elater, 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. 

 Formicidae, notes on some British Guiana Hymenoptera, exclusive of the, 



297. 

 Fossors, with their prey, from the S. Paulo district of South-East Brazil, 

 predaceous Reduviid bugs and, exhibited, xxxiv ; in P^ast Africa, observa- 

 tions on, xli. 



