304 ANGIOSPERMAE—DICOTYLEDONES 



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

 difformis P&. 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). — 



I. Diphysis serratulae /"z. 5, po-cltg. (B.); 2. Cilissa tricincta .S'. 5, do. (M.) ; 

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

 willughbiella .S'. S, skg. (M.); 6. Chalicodoma muraria Retz. 5, 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, 

 ' BI. 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, Verb. bot. Ver., Berlin, xxxv, (1893) 1894.) — 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 sufiices to work the pumping apparatus. 

 Warnstorf states that the pollen-grains are only 18-19 A' 'o"S '^^^ la fi broad, 

 but otherwise like those of L. corniculatus. 



Visitors. — In the island of F5hr, I only observed the honey-bee; in Rugen 



1 saw Bombus rajellus K. 5, skg., and also a moth (Zygaena filipendulae Z.) 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 Thuringen,' 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). 



