Insects in Great Britain . 
557 
tris L., sh. 20-23. V. 97. 15-1,900 ft. not infreq. (2) B. lapponicus 
F., sh. 20-23. V. 97, 8-1,900 ft. ab. 
136 . Vaccinium myrtillus, Linn. [Lit. Brit . 23, 29, 39 ; 
Ogle 1905; N.C.E. 1, 4, 16, 18, 33, 34, 40; Arct. 34, 36; 
Alps 2, 34 ; Pyren . 17.] A very typical bee-flower, attracting 
Bombus lapponicus in great quantity and other Bombi also. 
The honey is particularly abundant, and drops appear on 
the bell within the reach of insects which cannot obtain it 
from the nectary. Fruit may ripen very abundantly. 
Visitors. Lepidoptera. Heterocera : Geometridae\ (1) Larentia 
salicata Hb., sh. 25. VI. 95, 2,300 ft. twice. Hymenoptera. Acu- 
leata: Apidae\ (2) Bombus terrestris L., sh. 16. VI.-17. VII. 95, 22- 
23. V. 96, 18-27. V. 97, 12. VII. 99, 7-2,300 ft. (3) B. pratorum 
L., sh. 19. VI. 95, 2,000 ft. (4) B. lapponicus F., sh. 16-25. VI. 95, 
18-25. V. 97 > I2 - VI* 99) 7-2,400 ft. very ab. (5) B. hortorum L., 
sh. 17. VI. 99, 2,500 ft. Formicidae\ (6) Formica fusca Latr., 
seeking h. 18. V. 97, 1,900 ft. and inside a flower, the edge of which 
had been eaten, 12. V. 98, 800 ft. Diptera. Empidae\ (7) Empis 
lucida Ztt., 24. V. 97; 12. VI. 99, 1,600-2,300 ft. Anthomyiidae : 
(8) Anthomyia sulciventris Ztt., seeking h. 25. VI. 95, 2,300 ft. 
137 . Vaccinium Vitis-idaea, Linn. [Lit. Brit. 23, 26 ; 
N.C.E. 14, 33, 34, 40; Arct. 7, 36, 37 a, 38; Alps 2, 9.] 
Bees and hemitropous flies visit this flower. Fruit is set 
abundantly. 
Visitors . Lepidoptera. Heterocera: Noctuidae : (1) Triphaena 
sp., 19. VI. 95, 2,000 ft. Hymenoptera. Aculeata : Apidae : (2) 
Bombus terrestris L., sh. 24. IX. 95, 1,200 ft. (3) B. lapponicus F., 
sh. 19-27. VI. 95, 20-2,100 ft. (4) Nomada ruficornis L., sh. 12. 
VI. 99, 1,000 ft. Diptera. Syrphidae'. (5) Melanostoma quadri- 
maculatum Verrall, sh. 19. VI. 95, 2,000 ft. Empidae'. (6) Empis 
lucida Ztt., 19. VI. 95, 13. VI. 99, 19-2,000 ft. (7) E. livida L., 
sh. 19. VI. 99, 2,000 ft. 
138 . Erica Tetralix, Linn. [Lit. Brit. 23, 29, 34, 39 ; 
N.C.E. 1 , 3 c, 11, 12, 14, 14 a, 18, 21 a, 30, 35, 40.] Bombi 
are the chief visitors. By flowering just after midsummer, 
when butterflies are numerous, it obtains a certain number 
