264 ANGIOSPERMAE—DICOTYLEDONES 



terrester L. ; 8. £ucera hispana Lep. ; 9. E. interrapta Baer. ; 10. E. longicornis L. ; 

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

 M. muraria J?«/z. ; 15. Nomada imperialis Schmiedekn. ; 16. Osmia aurulenta Pz.; 

 17. O. pallicomis Friese ; 18. O. rufohirta Ltr.; 19. Podalirius crinipes Sm.; 

 20. P. dufourii Zi?/. ; 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 

 Kewensis). — 



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



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

 its back thickly with pollen ; 3. Megachile fasciata Sm. 5, 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 L. J, skg. C. Lepidoptera. 



Rhopalocera : 3. Rhodocera rhamni Z., skg. ; 4. Pieris brassicae L., 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 Miiller 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. 5, appearing to suck 

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

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

 albicans the humble-bee Bombus terrester L. t, skg. On the var. mollis. — 



