558 Willis and Bur kill. — Flowers and 
of visits from them. Apis visits it freely. A species of 
Bombus, probably B. terrestris, bites through the corolla. 
Abnormally, more or less polypetalous flowers (such as 
Sigerson described in Proc. Royal Irish Acad., 1871, Ser. II, 
vol. i, and Price in Proc. Bot. Soc. Edinb., xi, p. 256) are not 
uncommon in certain seasons. 
Visitors. Lepidoptera. Rhopalocera : (1) Argynnis selene Schiff., 
sh. 23. VI. 95, 900 ft. (2) A. aglaia L., sh. 15-25. VI. 95, 1. VII. 
96, 9-1,000 ft. (3) Polyommatus phloeas L., sh. 1. VII. 95, 800 ft. 
Heterocera: Nocluidae : (4) Celaena haworthii Curt., sh. 23. IX. 95, 
1,100 ft. Geometridae : (5) Cidaria sp., sh. 2. VII. 95, 1,100 ft. 
Hymenoptera. Aculeata : Apidae : (6) Apis mellifica L., sh. 17-21. 
VII. 95, 9-1,200 ft. (7) Bombus terrestris L., sh. 23. VI.-23. IX. 
95, 22. VI.-9. VII. 96, 8-1,400 ft. ab. (8) B. lapponicus F., sh. 
23. VI.-19. IX. 95, 8-10. VII. 96, 8-1,500 ft. (9) B. jonellus 
Kirby, cp. and sh. 21-22. VII. 95, 11-1,200 ft. (10) B. agrorum F., 
sh. 5. VII. and 23. IX. 95, 8-900 ft. (n) B. venustus Smith, sh. 22. 
VI. 95, 1,100 ft. Vespidae : (12) Vespa norvegica F., sh. by means 
of borings, 21-22. VII. 95, 11-1,200 ft. Diptera. Syrphidae'. (13) 
Eristalis pertinax Scop., 20. IX. 95, 9-1,000 ft. Muscidae : (14) 
Pollenia rudis F., sh. and fp. 22-23. IX. 95, 9-1,110 ft. Antho- 
myiidae : (15) Hyetodesia incana W., 20. IX. 95, 9-1,100 ft. Orta - 
lidae\ (16) Pteropaectria frondescentiae L., seeking h. 6. VII. 95, 
900 ft. Coleoptera. (17) Meligethes viridescens F., sh. by means 
of a boring, 23. IX. 95, 1,100 ft. 
139. Erica cinerea, Linn. [Lit. Brit. 23 , 26 , 29 , 34 , 39 ; 
Ogle 1905 ; Powell 2020 ; N.C.E. 14 , 14 a, 15 , 16 , 18 , 21 a, 
21 b.] Apis visits this plant more freely than it does 
E. Tetralix. Bombi are however the chief visitors, one of 
them, B. terrestris, often bites through the corolla in order 
to obtain the honey. Vespa and other short- tongued insects 
afterwards take advantage of the borings. 
Visitors. Lepidoptera. Rhopalocera: (1) Argynnis aglaia L., sh. 
18. VI. 96, 800 ft. (2) A. selene Schiff., sh. 23. VI. 95, 900 ft. (3) 
Coenonympha pamphilus L., sh. 26. VI. 95, 800 ft. (4) Polyom- 
matus phloeas L., sh. 15. IX. 95 and 18. VI. 96, 800 ft. Hymeno- 
ptera. Aculeata: Apidae : (5) Apis mellifica L., sh. 17-22. VII. 95, 
