38 ANGIOSPERMAEDICOTYLEDONES 



elongate, so that the anthers become exserted, and the pollen is carried by the wind 

 to the stigmas of younger flowers. {Cf. Vol. I, p. 71.) Warnstorf describes the 

 pollen-masses as containing 3 or 4 grains of whitish colour, irregular, beset with rows 

 of tubercles, and 37-44 /x in diameter. 



Visitors. Knuth observed the following in Schleswig-Holstein. 

 A. Diptera. All skg. or po-dvg. : Syrphtdae: i. Eristalis tenax Z. ; 2. Sy- 

 ritta pipiens Z. ; 3. Syrphus balteatus Z^i?^. ; 4. S. sp. B. Hymenoptera. Apidae: 

 all skg. 5. Apis mellifica Z. ; 6. Bombus cognatus Steph. ^ ; 7. B. terrester Z. 5 ; 

 8. Psithyrus rupestris F. J. C. Lepidoptera. All skg. {a) Noctuidae : 9. Plusia 

 gamma Z. (3) Rhopalocera: 10. Coenonympha pamphilus Z. ; 11. Polyommatus 

 phlaeas Z. 



Herm. Miiller gives the following list. 



A. Diptera. (a) Mxiscidae: i. Sarcophaga carnaria Z., skg. (3) Syrphtdae'. 

 2. Cheilosia longula Zett. ; 3. C. scutellata Fall., skg. ; 4. Chrysotoxum octoma- 

 culatum Curt., do. ; 5. Melithreptus scriptus Z., do. ; 6. Sericomyia borealis Fall., 

 do. (Thuringia) ; 7. Syritta pipiens Z., do. ; 8. Syrphus sps., do. B. Hymeno- 

 ptera. (a) Apidae : 9. Andrena dorsata K. 5, skg. and po-cltg. ; 10. A. fulvicrus 

 K. $, skg.; II. A. fuscipes K. 5 and J, do. ; 12. A. lapidarius Z. ^, do.; 13. A. 

 parvula K. 5, skg. and po-cltg. ; 14. A. simillima Sm. $ and $, do. ; 15. Apis mellifica 

 Z. 5, extremely numerous, skg.; 16. Bombus terrester Z. 5, 5 and S, skg. (also in 

 the Alps); 17. Diphysis serratulae Pz. $, skg.; 18. Halictus cylindricus Z^ J, do.; 



19. Saropoda bimaculata Pz. 5, do., with heather-pollen among its collecting-hairs ; 



20. Sphecodes gibbus Z. $, skg. {b) Vespidae: 21. Vespa holsatica Z'. 5, skg. C. 

 Lepidoptera. Rhopalocera: 22. Vesperia thaumas H/n. (=V. linea W. F.), skg. 

 D. Thysanoptera. 23. Thrips, freq. 



Alfken and Hoppner (H.) observed the following at Bremen. 

 A. Diptera. {a) BomhylUdae : i. Systoechus sulphureus il/iX'. {b) Muscidae; 

 2. Echinomyia grossa Z. ; 3. E. tessellata Z: {c) Syrphtdae: 4. Arctophila mussi- 

 tans F. ; 5. Chrysotoxum festivum Z. ; 6. Syrphus pyrastri Z. ; 7. Volucella bom- 

 bylans Z. B. Hymenoptera. {a) Apidae: 8. Andrena argentata Sm. 5; 9. A. 

 fuscipes K. 5 and $; 10. A. nigriceps K. $and J; 11. A. thoracica F. 5, skg., 2nd 

 gen.; 12. Apis mellifica Z., very common; 13. Bombus agrorum F. J, $ and $; 14. 

 B. arenicola Ths. ^ and $ (H.); 15. B. confusus Schenck J ; 16. B. derhamellus K. S ; 

 17. B. distinguendus iJ/or. 5,skg.(H.); 18. B.hortorumZ. {=B.mgv\c2ins Schmiedekn.) 

 small 5, skg. ; 19. B. jonellus K. J, in great numbers, up to end of September, skg., 

 $ and 5 ; 20. B. lapidarius Z. 5 and J; 21. B. lucorum Z. 5 ; 22. B. muscorum F. 

 $, 5 and 5; 23. B. proteus Gerst. J; 24. B. terrester Z. J; 25. B. variabilis 

 Schmiedekn. 5, 5 and J (H.); 26. CoUetes succinctus Z. 5 skg. and po-cltg., 

 S skg.; 27. Dufourea vulgaris Schenck 5 skg. and po-cltg., J skg.; 28. Halictoides 

 inermis Nyl. S; 29. Halictus calceatus Scop. 5 and S ; 30. H. leucozonius Schr. t, ; 

 31. H. punctulatus Zr: J; 32. H. rubicundus Chr. S; 33. H. sexnotatulus A>/. J; 

 34. Nomada brevicornis Macs. S, skg. ; 35. N. jacobaeae Pz. $, skg.; 36. N. obtusi- 

 frons Nyl. $, skg.; 37. N. roberjeotiana Pz. ?, skg.; 38. N. solidaginis Pz. $ and I, 

 skg.; 39. Prosopis pictipes Nyl. J; 40. Psithyrus campestris Pz. ? and $ (H.); 41. 

 P. rupestris F. J. ((5) Sphegidae: 42. Cerceris arenaria Z. $ and S skg.; 43. 

 Melhnus arvensis Z. $ and J, do. (r) Tenthredinidae : 44. Athalia lugens Ths. ; 

 45. A. rosae Z. 



Willis and Burkill record the following for Central Wales (' Fls. and Insects in 

 Gt. Britain,' Part I). ^ 



A. Diptera. (a) Muscidae: 1. Calliphora erythrocephala Mg.; 2. Onesia 

 cognata Mg. ; 3. O. sepulcralis Mg. ; 4. Lucilia cornicina F, freq. ; 5. Pollenia 

 rudisZ: {b) Syrphtdae: 6. Eristalis tenax Z., freq., skg.; 7. Melanostoma scalare 



