438 ANGIOSPERMAEDICOTYLEDONES 



just as well as the flower must suit it, for the insect to confine its visits so exclusively 

 to it. I have only found one exception to this exclusiveness, for I once found 

 a male of Melitta (Cilissa) melanura sucking honey on Thrincia hirta DC 



Friese saw the rare bee Melitta (Cilissa) haemorrhoidalis F., var. nigra Friese, 

 in Switzerland (canton Valais). 



Herm. Muller (H. M.), Buddeberg (BudcL), and myself (Kn.) have observed, 

 in addition, the following. 



(Insects regularly effecting all three kinds of legitimate union are indicated by 

 an asterisk (*); those which regularly effect only one or two kinds of legitimate 

 union are not specially designated ; the names of those which only effect pollination 

 accidentally, bringing about either legitimate or illegitimate union, are enclosed in 

 brackets [ ].) 



A. Coleoptera. (a) Curculionidae: i. [Nanophyes lythri F. (H. M.)]. (b) 

 Nittdultdae: 2. [Meligethes (H. M., Kn.)]. B. Diptera. Syrphidae: 3. Eristalis 

 intricarius Z., po-dvg. (H. M.) ; 4. E. sp. (Kn.); 5. *Helophilus pendulus Z., skg. 

 (H. M., Kn.) ; 6. *H. trivittatus F, do. (H. M.) ; 7. [Melithreptus taeniatus Mg., 

 po-dvg. (H. M.)] ; 8. Rhingia rostrata Z., skg. and po-dvg. (H. M., Kn.) ; 9. Syritta 

 pipiens Z., do. (H. M., Kn.) ; 10. Syrphus balteatus Deg., do. (H. M., Budd., Kn.) ; 

 11. S. ribesii Z. (Kn.); 12. Volucella bombylans Z., skg. and po-dvg. (Kn.); 13. *V. 

 bombylans Z., var. plumata Mg., skg. (H.M.). C. Hemiptera. 14. [Capsus 

 (H. M.)]. D. Hymenoptera. Apidae: 15. *Apis mellifica Z. 5, skg. (H. M., Kn.); 

 16. *Bombus agrorum F. ijj and 5, not infrequent, skg. (H. M., Kn.); 17. *B. der- 

 hamellus K. $ (Fohr, Kn.); 18. *B. lapidarius Z. $, 5 and J, skg. (H. M., Kn.); 19. 

 *B. sylvarum Z. $, do. (H. M.) ; 20. *B. terrester Z. 5 and , do. (H. M., Kn.) ; 

 21. Chelostoma nigricorne Nyl. 5, do. (Budd.); 22. *Cilissa melanura Nyl. % and J, 

 skg. and po-cltg. (H. M., Budd.); 23. [Halictus cylindricus F. $, po-cltg. (H. M.)] ; 

 24. [H. leucopus K. $, skg. (Budd.)]; 25. [H. leucozonius Schr. $ and J, do. 

 (Budd.)] ; 26. [H. minutissimus K. $, do. (H. M.)] ; 27. [H. morio F. $, do. (Budd.)]^ 

 28. Megachile centuncularis Z. J, do. (H. M.); 29. *M. fasciata Sm. S, do. (H.M.) 

 30. *Osmia adunca Panz. J, do. (Budd.); 31. *Saropoda rotundata Pz. t> and J, not 

 infrequent, skg. (H. M.). E. Lepidoptera. {a) Geometridae: 32. Timandra amata 

 Z., skg. (Budd.). (b) Rhopalocera : 33. Pieris rapae Z., freq., skg. (H. M., Kn.) ; 

 34. Rhodocera rhamni Z., do. (H. M.). F. Thysanoptera. 35. [Thrips (H. M.)]. 



The following were observed by the authorities, and for the localities named. 

 Loew (Silesia) a bee (Bombus agrorum F. J, skg.), a Microlepidopterid 

 (undetermined sp., skg.), and a butterfly (Pieris brassicae Z., skg.) ('Beitrage,' 

 p. 32). Alfken (Bremen) a Curculionid (Nanophyes lythri F., in vast numbers), 

 and 3 bees (Bombus derhamellus K. 5 ; B. distinguendus Mor. 5, skg. ; and 

 Halictus calceatus Scop. J). Wiistnei (Schleswig) the bee Macropis labiata Pz. 

 Friese (Baden (B.), Alsace (A.), Fiume (F.), Mecklenburg (M.), Switzerland (S.) r 

 and Hungary (H.)) the bees 1. Epeoloides caecutiens F. (F. and M., very rare S.); 

 2. Eucera basalis Mor. (F., according to Korlevic'); 3. E. salicariae Lep., not un- 

 common (A., S., H., Tyrol) ; 4. Melitta (Cilissa) melanura Nyl. (B., F., M., and H., 

 occasional, A. rare). Rossler (Wiesbaden) the Lepidoptera Earias chlorana Z.. and 

 Orthosia lota Cl. Von Fricken (Westphalia and E. Prussia) the Curculionid Nano- 

 phyes lythri F. Schletterer (Tyrol) the bees 1. Bombus variabilis Schmiedekn.; 

 2. Halictus maculatus Sm. ; Melitta (Cilissa) melanura Nyl. (also seen there by 

 von Dalla Torre). Redtenbacher (Vienna) the Curculionid Nanophyes lythri /\ 

 Ducke (Aquileja (A.) and Austrian Silesia (S.)) the bees 1. Eucera (Macrocera) 

 dentata Klug. t> (A.); 2. E. (M.) salicariae Lep. 5 and t (A.); Melitta (Cilissa) 

 melanura Nyl. (S.). H. de Vries (Netherlands) a humble-bee, Bombus terrester 

 Z. 5 (Ned. Kruidk. Arch., Nijmegen, 2. Ser., 2. Deel, 1875). MacLeod (Flanders) 



