INDEX. 



Aberrations, Special, of P. brassi- 

 er, 30, 61 ; Zygffinids, 32, 69 ; 

 P. icarus, 34, 50, 60, 64, 74; 

 L. hirtaria, 34 ; R. pblroas, 

 41, 57, 60, 62, 64, 66, (58; C 

 rubi, 41 ; C. croceus, 42 ; A 

 berenice, 47 ; H. semele, 50 

 A. caja, 51 ; Z. tnfolii, 52; S 

 menthaslri, 52; K. spini, 56; 

 E. jurtina, 60, 65 ; P. atalanta, 

 61, 62 ; B. selene, 63 ; P. ma- 

 chaon, 63; C. pascuellus, 64; 

 H. bispidus, 73 ; E. cardamines, 

 74 ; P. megera, 74 ; A. urticffi 

 Aberration, of colour and scale 

 defect, 61 ; in brood of V. io . . 

 Abstract of Proceedings . . 

 Abnormal, Cheiranthus flowers, 



39 ; Nest of V. germanica 

 Abundance of A. thetis . . 

 Additions to the Library, xn. ; 

 Collections .. xii., 39, 



Annual, Address, by K. G. Blair, 

 9, 75; Meeting, 74; Balance 

 Sheet, xvi., xvii., 74; Exhibi- 

 tions 

 Ants and larvre of P. megera . . 

 Associated groups of butterflies in 



Venezuela 

 Asymmetry in, V. io, 34 



paphia . . 

 Bacon on " flying glowworm 

 Balance Sheet, 1921 

 Bark-boring beetles 

 Bird-skins exhibited 

 Breeding, Mr. Main's contrivance 



for .. 



British Association 



" British Hydracarina," Abstract 



of lecture oy G. I). Soar 

 Broods of, M. neustria . . 

 Chrysophanus specie's 

 Commons and Footpaths Preser- 

 vation Society, 7 ; Resolution 

 sent to . . 

 Confluence of markings in, Zygre- 



nids •^'^' 



Curator's Report 



D. 



58 



66 



.. 65 



' .. 13 



xvi, xvii 



.. 31 



.. 40 



30 

 70 



3 

 57 



51 



I'AGE 



Differentiation and discussion of 

 X. rivata and X. alternata 

 (sociata) . . • . • • . . 45 



Donations . . . . xii, 39, 48 



Early appearances . • 35, 36 



Economy of, TJtricularia, 53 ; 



Pinguicula . . • ■ . . 54 



Exhibition of, Special, The genus 



Zygma . . . . • • . . 32 



Field Meetings, List of, xii ; Ox- 

 shott, 41 ; Eastbourne, 42 ; 



Chalfont Road 45 



Flight of aquatic Coleopteron . . 32 

 Flourescence, its testimony in 



mimicry, by Prof. Poulton . . 58 

 Fossil Insects exhibited . . . . 39 



Galls of wild-apple . . . . 69 



Geographical races of P. machaon, 



by Lord liothitcliild .. . . 59 



" Ghost " Swift Moth a Will o' 



the Wisp . . • • _ • • 1'^ 



Gynandromorph of, Danaida 

 i schenkii . . . . • • . . 65 



I Habits of, S. African "cuckoo 

 spit" insect, 40; Scorpion ? 

 with young ones, 56 ; aquatic 

 larvae of T. rickardi . . . . 73 



' " Highways and Byways "—Syn- 

 opsis of a lecture by Laiorence 

 W. Chubb .. ■■ 7, 58 



Hon. Member elected, G. C. 

 Champion . . . • • • ^ 



■ Hybrids of, Z. fijipendulse— loni- 



cerffi, 30; Zygsena sp., 34; Z. 

 trifolii — hippocrepidis . . 43, 52 

 "Hydracarina or Water-mites, 

 The," lecture by C. D. Soar 9, 55 



■ Immigrant, G. bipunctatus, 49 ; 



Against the wind . • . . 53 



Jubilee of the Society . . • • 9 



Lantern slides xi., 6, 31, 36, 53, 58 

 Larvffi of, R. phlaas of two forms, 



34; Aquatic, T. rickardi .. 73 



Librarian's Report .- . . xu 

 Life-history of, Rhyssa persuas- 



oria, 1 ; M. proscaraba3us . . 53 

 List of. Officers and Council, i, 



74 ; Members "i 



