550 
Willis and Burkill. — Flowers and 
Muller remarks, that the flower is more sure of advantage 
from the visits of Bombi than of Apis ; but at Clova, in 
Flanders, Westphalia, &c., the latter is the more abundant 
visitor. 
Visitors . Hymenoptera. Aculeata : Apidae : (i) Apis mellifica 
L., cp. and seeking h. 19. VI. 95, 21-22. V. 96, 24. V. 97, 10. VI. 
99, 7-800 ft. freq. (2) Bombus terrestris L., cp. and seeking h. 21- 
22. V. 96, 22-27. V. 97, 16. VI. 99, 7-800 ft. freq. (3) B. lap- 
ponicus F., sp. and seeking h. 23. VI. 96, 800 ft. once. (4) B. agro- 
rum F., seeking h. 21. VI. 95, 800 ft. once. (5) B. pratorum L., 10. 
VI. 99, 800 ft. once. Myrmicidae\ (6) Myrmica rubra L., seeking h. 
23. VI. 95, 800 ft. once. Formicidae\ (7) Formica fusca Latr., seeking 
h. 23. VI. 95, 800 ft. once. Diptera. Syrphidae : (8) Syrphus 
? ribesii L., seeking h. 17-23. VI. 95, 800 ft. and ? the same once at 
2,300 ft. Muscidae : (9) Calliphora sp., 17. VI. 95, 2,300 ft. Antho- 
myiidae : (10) Hyetodesia incana W., seeking h. 17. VI. 95, 2,300 ft. 
(11) Anthomyia sp., fp. 19-23. V. 97, 16. VI. 96, 20-26. V. 97, 10. 
VI. 99, 7-800 ft. (12) Trichophthicus sp., fp. 19-23. V. 97, 7-800 ft. 
(13) Azelia aterrima Mg., seeking h. 17. VI. 95, 2,300 ft. Sapromyzidae : 
(14) Lauxania cylindricornis F., 23. VI. 95, 800 ft. (15) L. elizae 
Mg., 23. VI. 96, 800 ft. Coleoptera. (16) Meligethes viridescens F., 
fp. 15. VI. 95, 24. VI. 96, 10. VI. 99, 800 ft. (17) M. aeneus F., 
15. VI. 95, 800 ft. (18) Anthobium torquatum Marsh., seeking h. 
23. VI. 95, 24. VI. 96, 800 ft. (19) Ceuthorrhynchidius sp., ? sucking 
the juice of the flower, 24. VI. 96, 800 ft. Hemiptera. (20) Hetero- 
cordylus tibialis Hahn., 19-23. VI. 95, 8-900 ft. freq. 
Class H § 22. Leguminous Type. 
121. Cytisus Laburnum, Linn. [Lit. N.C.E. 1 , 9 , 33 , 40 .] 
In cultivation. As honey is obtained by boring the tissues 
the range of visitors is narrowed considerably, for none but 
Apis and Bombi find how to obtain it. 
Visitors. Hymenoptera. Aculeata: Apidae \ (1) Apis mellifica 
L., ab. (2) Bombus terrestris L. ^(3) B. lapidarius L. All sucking 
the juices of the flower, 21. V. 96, 800 ft. 
122. Trifolium pratense, Linn. [Lit. Brit. 23 ; Darwin 
482 ; N.C.E. 1, 3 b, 11 , 14 , 14 a, 15 , 16 , 18 , 21 b, 25 , 30 , 31 , 
