264 ANGIOSPERMAEDICOTYLEDONES 



terrester Z. ; 8. Eucera hispana Lep. ; 9. E. interrupta Baer. ; 10. E. longicornis L. ; 

 II. E. ruficoUis Brull.\ 12. Megachile argentata F,\ 13, M. manicata Gir.\ 14. 

 M. muraria i?f/0. ; 15. Nomada imperialis iSV/i/wzif^f^^w. ; 16. Osmia aurulenta Pz.\ 

 17. O. pallicornis Frtese; 18. O. rufohirta Z/r. ; 19. Podalirius crinipes 6'/w. ; 

 2b. P. dufourii Z^/>. ; 21. P. retusus Z,, var. meridionalis P/r. 



Loew observed the following in the Berlin Botanic Garden. 



I. Bombus agrorum F. 5, po-cltg, ; 2. B. hortorum Z. 5 and 5, steadily skg. ; 

 3. Megachile centuncularis Z. j, skg. ; M. fasciata Sm. 5, do. 



2266. S. Tenore Spr. (= S. pratensis Z., according to the Index Kewensis\ 

 and 2267. S. coccinea Juss. Darwin describes these species as self-sterile. 



2268. S. Baumgarteni Griseb. (= S. pratensis Z., according to the Index 

 Kewensts). 



Visitors. Loew observed the following bees in the Berlin Botanic Garden. 



I. Anthidium manicatum Z. 5, skg. ; 2. Bombus hortorum Z. $, do., covering 

 its back thickly with pollen ; 3. Megachile fasciata Sm. i, skg. 



2269. S. controversa Tenore. 



Visitors. Loew observed the humble-bee Bombus hortorum Z. 5, skg.,. in the 

 Berlin Botanic Garden. 



2270. S. lanata Mich. 



Visitors. Loew (Berlin Botanic Garden) observed 2 bees Anthidium 

 manicatum Z. 5, skg., and Bombus agrorum F. 5, steadily skg. 



2271. S. sclaraeoides Brot. 



Visitors. ^Loew observed the following in the Berlin Botanic Garden. 



A. Diptera. Syrphidae: i. Pipiza chalybeata Mg., on the flowers. B. Hy 

 menoptera. Apidae\ 2. Bombus hortorum Z. J, skg. C. Lepidoptera. 



Rhopalocera: 3. Rhodocera rhamni Z., skg. ; 4. Pieris brassicae Z., going steadily 

 from flower to flower, and skg. 



706. Monarda L. 



2272. M. ciliata (?). The flower mechanism of this species has been very 

 fully described by Errera and Gevaert (Bull. Soc. roy. bot. Beige, Bruxelles, xvii, 

 1878, pp. 128-32), and shown to be adapted for crossing by hawk-moths. 



2273. M. didyma L. 



Visitors. Hermann Muller saw the noctuid moth Plusia gamma Z., in the 

 evening (*Weit. Beob.,' Ill, p. 55), and Loew (Berlin Botanic Garden) observed 

 2 bees Apis mellifica Z. 5, skg. through holes made by humble-bees, and Bombus 

 terrester Z. 5, perforating the base of the corolla-tube. 



2274. M. fistulosa L. Willis (J. Linn. Soc, Bot., London, xxx, 1895) 

 describes this species as bearing protandrous flowers, though these are smaller than 

 those of M. didyma. 



Visitors. Loew observed the following in the Berlin Botanic Garden. 



A. Hymenoptera. Apidae: i. Bombus terrester Z. ^i appearing to suck 

 legitimately ; 2, Halictus sexnotatus K. 5, vainly skg. ; 3. Psithyrus vestalis Fourcr. 

 J, skg. B. Lepidoptera. Rhopalocera : 4. Pieris brassicae Z., skg. On the var. 

 albicans the humble-bee Bombus terrester Z. S, skg. On the var. mollis. 



I 



