Insects in Great Britain . 
241 
5. 9. (6) Halictus rubicundus Chr., do. Diptera. Syrphidae'. (7) 
Volucella pellucens L., s. h. 4. 9. (8) Eristalis aeneus Scop., freq. 
s. h. 5. 9. (9) E. tenax L., do. (10) E. horticola Deg., do. Evipidae'. 
(11) Rhamphomyia sp. ?, s. h. 10. 9. Anthomyiidae : (12) Mydaea 
sp. ?, f. p. 12. 9. (13) Trichophthicus cunctans Mg., s. h. freq. 5. 9. 
(14) Anthomyia radicum L., s. h. and f. p. 5-12. 9. (15) A. sp. ?, 
do. Coleoptera : (16) Crepidodera ferruginea Scop., ab. (freq. in 
copula) f. p. and devouring the anthers 5-12. 9. (17) Meligethes 
sp. ?, freq. f. p. and s. h. 
13 . Stachys palustris L. [Class H, Lit. 1 , 4 , 8, 14 , 18 , 19 .] 
This plant abounds in one place on the Rascarrel Road and 
was watched there ; it occurs, however, in several other places 
in the district. The number of individual visits of humble- 
bees was probably ten times as many as those of all other 
insects put together. It does not seem to fertilize itself at 
all, or very little, but the number of visits received ensures 
a fair amount of seed being set. On one spike examined, 
21 flowers had set 54 seeds. 
Visitors. Hymen optera. Aculeata : Acutilingues : (1) Bombus 
muscorum L., s. h. very ab. 24-31. 8. 94. (2) B. hortorum L., 
do. (3) B. terrestris L., do. (4) Anthidium manicatum L., s. h. 
23. 8. 94. Diptera. Syrphidae'. (5) Melanostoma scalare F., f. p. 
31. 8. 94. (6) Platychirus albimanus F., s. h. (?) ab. f. p. 24-31. 8. 94. 
(7) P. manicatus Mg., f. p. 31. 8. 94. (8) Rhingia rostrata L., s. h. 
and f. p. ab. 24-31. 8. 94. Antho?nyiidae : (9) Anthomyia radicum 
L., f. p. freq. 24-30. 8. 94. Coleoptera: (10) Meligethes sp. ?, f. p. 
ab. 23-31. 8. 94. Hemiptera : (n) Anthocoris sp. ?, 28. 8. 94. 
14 . Galeopsis Tetrahit L. [Class H, Lit. 1 , 2 , 4 , 5 , 17 , 18 .] 
Frequent in the district. It varies considerably in colour 
from red to pure white. 
Visitors. Hymenoptera. Aculeata : Acutilingues : (1 ) Bombus mus- 
corum L., s. h. Rase. Rd. 5. 9. 94. (2) B. terrestris L., s. h. freq. 
Rase. Rd. 31. 8. 94. 
Five of the eight visitors observed by Muller in Low Germany, and 
all of those recorded by other observers, were humble-bees. 
15 . Prunella vulgaris L. [Class H, Lit. 1 , 2 , 4 , 9 , 11 , 14 , 
