LEGUMJNOSAE 311 



Hermann MuUer (H. M,), Buddeberg (Budd.), and myself (Kn.) observed the 

 following in North and Central Germany. — 



A. Hymenoptera. Apidae: i. Apis mellifica Z. 5, skg. (H. M.); 2. Bombus 

 agrorum F. 5, in large numbers, skg. (H. M., Budd., Kn.); 3. B. hortorum Z. 5 5 

 and $, in large numbers, skg. legitimately (H. M.) ; 4. B. lapidarius L. 5, skg. (H. M.) ; 

 5. B. rajellus K. 5, po-cltg. and skg. legitimately (H. M.) ; 6. B. variabilis Schmtedekn., 

 var. tristis Seidl. ^, skg. (H. M.). B. Lepidoptera. {a) Geomelridae : 7. Odezia 

 chaerophyllata L. (H. M.). (3) Rhopalocera : Melanargia galatea L., skg. (H. M.). 



Loew saw 2 bees in the Berlin Botanic Garden. — i. Megachile willughbiella 

 K. S, skg. ; 2. Osmia rufa L. 5, po-cltg. 



729. A. aristatus L'H^rit. — According to Briquet (' fitudes de biol. flor. dans 

 les Alpes Occident.'), the flowers of this species secrete abundant nectar, and are 

 therefore eagerly visited by bees and humble-bees. They possess an explosive 

 mechanism that acts only once, though the alae and carina subsequently return 

 to their original position, and during subsequent visits the sexual organs protrude, 

 as a result of elasticity. Automatic self-pollination may take place (Kirchner). 



730. A. Cicer L. — The flowers of this species are yellowish-white in colour 

 and possess an agreeable odour. Kirchner states that their mechanism essentially 

 resembles that of A. Glycyphyllos. 



Visitors. — Loew saw a humble-bee, Bombus agrorum F. 5, skg., in the Berlin 

 Botanic Garden. 



Schulz (' Beitrage,' II, p. 209) observed flowers perforated by humble-bees. 



731. A. danicus Retz. (=A. hypoglottis Z.). — 



Visitors. — Schulz (loc. cit.) noticed flowers perforated by humble-bees. 



732. A. exscapus L. — Automatic self-pollination is inevitable in this species, 

 should insect-visits fail, for the stigma lies between the anthers (Schulz). 



Visitors. — Two humble-bees, Bombus hortorum Z. and B. agrorum F., skg. 

 legitimately and effecting cross-pollination. B. terrester Z. perforates the flowers 

 {Schulz, loc. cit.). 



733. A. depressus L. (Herm. MuUer, ' Alpenblumen,' pp. 230-1.) — In the 

 flowers of this species, the depressed carina very often fails to completely regain 

 its old position, so that the stigma and stamens remain protruding from it more 

 or less. Automatic self-pollination takes place if insect- visits fail (cf Fig. 100). 



Visitors. — Herm. Miiller observed 2 humble-bees and a moth (Plusia). 



734. A. monspessulanus L. — Hermann Miiller's idea (' Alpenblumen,' 

 p. 231), that the flowers of this species, conspicuous on account of their size and 

 purple colour, receive a greater number of visits from humble-bees than those of 

 A. depressus, is confirmed by MacLeod. He observed four species of humble-bee, 

 sucking legitimately in the Pyrenees. MtiUer himself only saw Vanessa cardui Z., 

 sucking diligently and persistently. 



Visitors. — Loew noticed 2 bees in the Berlin Botanic Garden. — 1. Andrena 

 dorsata K. 5, po-cltg.; 2. Bombus agrorum F. 5, skg. And vide supra. 



735. A. alpinus L. (=Phaca astragalina DC^. (Axell, 'Om Anord. for 

 Fanerog. Vaxt. Befrakt.,' p. 1 7 ; Herm. Miiller, ' Alpenblumen,' pp. 231-2 ; Lindman, 



