5° 



ANGIOSPERMAE—DICOTYLEDONES 



(Bombus hortorum Z.) sucking, and occasionally the ground humble-bee (Bombus 

 terrester Z.). Hermann Miiller — in the Alps — saw various humble-bees sucking 

 nectar or collecting pollen, and one of them (Bombus mastrucatus Gerst.) biting 

 through the upper sepal and stealing nectar, though some individuals sucked it in 

 the legitimate way. In the same region he also noticed one of the Lepidoptera 

 (Lycaena sp.) vainly trying to get at the nectar. 



Frey-Gessner observed the following bees in Switzerland. — 



I. Bombus agrorum F. 5, 5, and S ; 2. B. alticola Kriechh. 5 and S ; 3. B. brevi- 

 gena Tin. ( = B. mastrucatus Gerst) ; 4. B. Gerstackeri Mor. 5, 5, and S (especially 

 foundress-queens) ; 5. B. hortorum Z. 5 (which had deserted the nest), §; ^.nd S ; 

 6. B. niendax Gerst. one 5, many 5^ one S ; 7. B. pratorum Z. 



Dalla-Torre noticed B. alticola Kriechb. in the Tyrol, and Schletterer B. hortorum 

 Z. in the same region. 



Fig. k>. Aconitttm Napellur;. L.{^h<iX W^rm.W\i\\ftT). A. Flower in first (male) stajrc. The dark- 

 coloured stamens have become erect ; their anthers have dehisced, and are coated with white pollen. 

 B. The same flower seen from the side ; a. a hole bitten by Bombus mastrucatus. C. The same in 

 longitudinal section. D. Stamens and carpels in the first (male) stag^e ; some of the anthers are mature, 

 the stif^inas are still immature; a\ undehisced anthers with filaments bent back; a-, stamens that 

 are becorninf^ erect ; a\ stamens that are erect and covered with pollen ; a*, stamens with empty anthers 

 bending backwards; a'\ ditto, completely bent back. E. Stamens and carpels in the second (female) 

 sta^e : the anthers are all empty, and the stamens bent back : the stigmas are mature. (A— C natural 

 size ; U and E X 2.) 



Gerstacker observed the following humble-bees at Kreuth. — 



I. Bombus hortorum Z., 'frequently biting off [the flowers] at their bases, like 

 other species of humble-bee'; 2. B. Gerstackeri Mor.; 3. B. mastrucatus Gerst., 5 

 and 5, ' biting off [the flowers] at their bases ' ; 4. Psithyrus globosus Ev. 



Ain^en saw the following humble-bees at Bremen. — 



I. Bombus agrorum Z'. ; 2. B. hortorum Z. ; 3. B. sylvarum Z. And on the 

 Schlern in the Tyrol — 4. B. Gerstackeri Mor. 



JiIacLeod observed in the Pyrenees three humble-bees, and the humming-bird 

 hawk-moth (Macroglossa stellatariim), (' Pyreneenbl.,' pp. 381-2). 



In Dumfriesshire (Scott-EUiut, 'Flora of Dumfriesshire,' p. 7) a humble-bee was 

 noticed. 



