336 ANCIOSPERMAE—DICOTYLEDONES 



Kirchner ('Flora v. Stuttgart,' p. 513) describes their mechanism as agreeing 



almost completely with that of L. pratensis, but the end of the style is somewhat 



broader. 



Visitors. — Alfken observed the following bees at Bremen. — 



I. Andrena convexiuscula K. 5 and S; 2. A. xanthura K. 5, skg. and po-cltg. ; 



3. Coelioxys quadridentata L. 5, sk. ; 4. Halictus nitidiusculus K. 5 ; 5. H. punctatis- 



simus Schenck 5 ; Megachile circumcincta K. S. 



Schmiedeknecht saw the humble-bees Bombus hortorum L. 5, and B. mastrucatus 

 Gersl. 5, in Thuringia. MacLeod noticed 2 humble-bees in the Pyrenees (Bot. Jaarb. 

 Dodonaea, Ghent, iii, 1891, pp. 434, 440). Loew observed 3 bees in the Berlin 

 Botanic Garden.— i. Anthophora pilipes F. 5, skg.; 2. Bombus agrorum F. 5, do.; 

 3. B. lapidarius L. 5, do. In Dumfriesshire 2 humble-bees were recorded (Scott- 

 Elliot, ' Flora of Dumfriesshire,' p. 52). 



Schulz noticed flowers perforated by humble-bee?. 



791. L. odoratus L. — The flowers of this species smell like honey. 

 Visitors. — Herm. MuUer saw a bee (Anthidium manicatum Z.), skg., in 



Strasburg. 



792. L. niger Bemh. (=Orobus niger L.). (Knuth, ' Bloemenbiol. Bij- 

 dragen.') — The flowers of this species studied by me in Schleswig-Holstein possess 

 a mechanism agreeing with that of L. pratensis. The vexillum is purple-red in 

 colour, with a darker nectar-guide; it is about 10 mm. broad, and rises to a height 

 of 8 mm. The tips of the alae are of a bluish-violet ; the alar and carinal claws 

 are colourless. The processes and depressions of the alar laminae and carina are 

 even better developed than in A. pratensis; but there is hardly any interlocking 

 of the epidermal cells, so that these petals can easily be separated. The distance 

 from the entrance of the flower to the nectar is 7 mm. The petals become dis- 

 coloured after anthesis. 



Visitors. — 1 saw Bombus agrorum F., skg. Loew observed 3 bees in the 

 Berlin Botanic Garden. — i. Bombus agrorum F. 5, skg.; 2. B. lapidarius L. 5, do.; 

 3. Osmia rufa Z. 5, skg. and po-cltg. 



MacLeod noticed Bombus agrorum F. 5 in the Pyrenees (Bet. Jaarb. Dodonaea, 

 Ghent, iii, 1891, p. 439). Bombus terrester Z. also visits the flowers. It bites 

 through the base of the vexillum from above, or at the tip, and steals nectar through 

 the opening, which is sometimes 4 mm. long and 2 mm. broad. 



Schulz (Central Germany) also saw flowers perforated by humble-bees. 



793. L. variegatus Ten. — 



Visitors. — Loew noticed 2 long-tongued bees in the Berlin Botanic Garden. — 

 I. Bombus hortorum L. $, skg. ; 2. Osmia rufa Z. 5, skg. and po-cltg. 



Schenck saw 2 bees in Nassau. — i. Megachile ericetorum Z^/. ; 2. Xylocopa 

 violacea Z. 



Schulz (Central Germany) noticed flowers perforated by humble-bees. 



794. L. setifolius L. — Kiefer states that this species bears cleistogamous 

 flowers. 



