LEGUMINOSAE 313 



Visitors. Lindman says that the flowers are sparingly visited on the Dovrefjeld 

 by humble-bees and Lepidoptera. 



737. A. alopecuroides L. 



Visitors. Loew saw Bombus hortorum Z. $> and |jj, steadily skg., in the Berlin 

 Botanic Garden. 



738. A. arenarius L. 



Visitors. Bombus pratorum Z. $j, skg. (Loew, Berlin). 



739. A. glycyphylloides DC. 



Visitors. Bombus agrorum F. 5, skg. (Loew, Berlin). 



740. A. narbonensis Gouan. 



Visitors. Bombus hortorum Z. tjj, skg., and Megachile fasciata Sm. S, do. 

 (Loew, Berlin). 



741. A. onobrychis L. 



Visitors. Megachile fasciata Sm. J, skg. (Loew, Berlin). Von Dalla Torre 

 and Schletterer record the following bees for the Tyrol. 



1. Andrena curvungula Thorns.; 2. Bombus confusus Schenck; 3. B. hortorum 

 L. ; 4. B. variabilis Schmiedekn. ; 5. Eucera longicornis Z. ; 6. Megachile muraria 

 L. ; 7. Melecta luctuosa Scop. ; 8. Osmia aurulenta Pz. ; 9. O. cornuta Ltr. ; 10. O. 

 spinolae Schenck ; n. Podalirius fulvitarsis Lep. ; 12. P. parietinus F.; 13. P. retusus 

 Z. ; 14. Sphecodes similis Wesm. 



Schulz observed flowers perforated by humble-bees at Bozen. 



221. Coronilla L. 



Yellow nectarless bee flowers, with pumping arrangement, from which threads 

 of pollen are extruded. 



742. C. vaginalis Lam. ( = C. montana Schr.). (Herm. Midler, ' Alpenblumen,' 

 pp. 249-52.) The flower mechanism of this species agrees on the whole with that of 

 Lotus. There are differences, however, in the order of development of the inner 

 and outer filaments, and as to the part they play in pressing out pollen ; also as 

 regards the relative size of the alae and carina and the way they are united together. 

 The carina too is less easily depressed. It is doubtful if self-pollination takes place 

 (cf. Fig. 1 01). 



Visitors. These are very rare. In good weather, and after watching for days, 

 Herm. Muller only once observed a po-cltg. bee (Andrena ?). 



743. C. varia L. (Delpino, 'Ult. oss.,' p. 45; Herm. Muller, 'Fertilisation,' 

 pp. 198-9; Kirchner, 'Flora v. Stuttgart/ p. 498; Loew, 'Bliitenbiol. Floristik,' 

 P* 399-) I n this species, again, the flower mechanism is similar to that of Lotus, 

 except that the thickened ends of all ten filaments act as pistons. The two 

 openings at the base of the free filament are wanting, for the flowers do not secrete 

 nectar in the usual place, but on the outside of the fleshy calyx, where it is sought 

 out by bees. These settle upon the alae in the normal fashion, and probe beneath 

 the vexillum. The proboscis passes through the wide space between the unusually 

 slender bases of the petals to the outside of the flower, encountering the nectar on 

 the calyx (Kirchner). 



