304 ANGIOSPERMAEDICOTYLEDONES 



Schmiedekneckt gives the bees Osmia aurulenta Pz. for Thuringia, and O. 

 difformis Pfr. for the Pyrenees ; " while Gerstacker noticed two bees at Berlin 

 Coelioxys quadridenta L. and Osmia tridentata Duf. et Perr (one 5). 



Loew observed the hover-fly Eristalis tenax L., po-dvg., in Silesia, and the 

 following bees in Brunswick (B.) (' Beitrage,' p. 53), Mecklenburg (M.), (op. cit., 

 p. 44), Switzerland (Sw.) and the Tyrol (T.) (op. cit., p. 61). 



1. Diphysis serratulae Pz. 5, po-cltg. (B.); 2. Cilissa tricincta K. $>, do. (M.) ; 

 3. Colletes fodiens K. $, do. (M.) ; 4. Megachile argentata F. 5, do. (M.) ; 5. M. 

 willughbiella K. J, skg. (M.); 6. Chalicodoma muraria Retz. $, po-cltg. (T.); 7. 

 Eucera longicornis L. 5, do. (Sw.) ; 8. Megachile analis Nyl. 5, do. (Sw.) ; 9. Osmia 

 angustula Zett. (T.). 



MacLeod saw Apis, 5 humble-bees, Diphysis, and 5 Lepidoptera in Flanders 

 (Bot. Jaarb. Dodonaea, Ghent, vi, 1894, pp. 352-3); and 11 long-tongued bees, 

 7 Lepidoptera, and a fly in the Pyrenees (op. cit., iii, 1891, pp. 437-8). 



In Dumfriesshire, Apis, 2 humble-bees, a short-tongued bee, a hover-fly, and 

 a beetle were recorded (Scott-Elliot, ' Flora of Dumfriesshire,' p. 47). 



In England, Saunders observed the leaf-cutting bee Megachile versicolor Sm., 

 and Smith the wall-bee Osmia aurulenta Pz. 



Schulz in Central Germany noticed flowers perforated by humble-bees. 



Only bees are able to liberate the flower mechanism ; other visitors are unbidden 

 guests. 



709. L. uliginosus Schkuhr ( = L. major Sm.). (MacLeod, Bot. Jaarb. 

 Dodonaea, Ghent, vi, 1894, p. 353; Kirchner, 'Flora v. Stuttgart,' p. 494; Knuth, 

 'Bl. u. Insekt. a. d. nordfr. Ins.,' pp. 62, 153, ' Weit. Beob. ii. Bl. u. Insekt. a. d. 

 nordfr. Ins.,' p. 233, 'Bliitenbiol. Beob. a. d. Ins. Riigen'; Schulz, 'Beitrage,' II, 

 p. 209; Warnstorf, Verh. bot. Ver., Berlin, xxxv, (1893) *894-) The flower 

 mechanism of this species is exactly like that of L. corniculatus, but the carina is 

 longer and narrower, and is not exactly vertical but directed obliquely upwards. 

 Perhaps, therefore, rather less pressure suffices to work the pumping apparatus. 

 Warnstorf states that the pollen-grains are only 18-19 /x long and 12 /x broad, 

 but otherwise like those of L. corniculatus. 



Visitors. In the island of Fohr, I only observed the honey-bee; in Riigen 



1 saw Bombus rajellus K. 5, skg., and also a moth (Zygaena filipendulae L.) as 

 an unbidden guest. Schulz noticed flowers perforated by humble-bees in Central 

 Germany. 



In Thuringia I only observed a moth, Zygaena trifolii Esp. (an unbidden guest) 

 ('Bliitenbiol. Beob. in Thiiringen,' p. 42). 



H. de Vries saw a humble-bee (Bombus subterraneus L. 5) in the Netherlands 

 (Ned. Kruidk. Arch., Nijmegen, 2. ser., 2. deel, 1875). MacLeod observed Apis, 



2 humble-bees, a hover-fly, and 2 Lepidoptera in Flanders (Bot. Jaarb. Dodonaea, 

 Ghent, vi, 1894, p. 353). 



Willis noticed a humble-bee, Bombus agrorum F., skg., in the neighbourhood 

 of the south coast of Scotland (' Fls. and Insects in Gt. Britain,' Part I). 



