. Handbook of flower pollination : based upon Hermann Mu?ller's work 'The fertilisation of flowers by insects' . Fertilization of plants. 470 ANGIOSPERMAE—DICOTYLEDONES. proiogynous (op. cit., pp. 311, 323). He agrees (op. cit., p. 278), however, with Hermann Miiller and olhers in stating that at the beginning of anthesis only pollen- covered anthers project I'rom all the flowers,- and later only styles with receptive stigmas. Schulz states that umbels of orders i to 3 usually bear only,hermaphrodite flowers, while those of the fourth order chiefly contain male ones. Visitors.—I observed the f
. Handbook of flower pollination : based upon Hermann Mu?ller's work 'The fertilisation of flowers by insects' . Fertilization of plants. 470 ANGIOSPERMAE—DICOTYLEDONES. proiogynous (op. cit., pp. 311, 323). He agrees (op. cit., p. 278), however, with Hermann Miiller and olhers in stating that at the beginning of anthesis only pollen- covered anthers project I'rom all the flowers,- and later only styles with receptive stigmas. Schulz states that umbels of orders i to 3 usually bear only,hermaphrodite flowers, while those of the fourth order chiefly contain male ones. Visitors.—I observed the following po-dvg. hover-flies; and skg. bees and butterflies in the Botanic Garden of the Kiel Ober-Realschule.— A. Diptera. Syrphidae : 1. Eristalis nemorum Z.; 2. Syrphus ribesii L. B. Hymenoptera. Apidae: 3. Apis mellifica Z. 5; 4. Bombus lapidarius Z. 5; 5. B. terrester Z. 5 and 5- C. Lepidoptera. Rhopalocera: 6. Pieris rapaeZ.; 7. Vanessa atalanta Z. Herm. Muller gives the following list.— A. Diptera. [a) Muscidac: all skg.: i. Species of Anlhomyia ; 2. Echinomyia feraZ.; 3. Lucilia caesar Z.; 4. Sarcophaga carnaria Z. (li) Syrphidae: all freq.: 5. Eristalis arbustorum Z.; 6. E. nemorum Z.; 7. E. tenax Z.; 8. Helophilus floreus Z. B. Hymenoptera. All skg. (a) Apidae: 9. Andrena rosae Pz. 5; 10. Apis mellifica Z. |^; 11. Halictus cylindricus F. t>; 12. H. longulus Sm. S; 13. Nomada robjeotiana Pz. 5. (U) Chrysididae: 14. Chrysis sp. (r) Sphegidar: 15. Ammophila sabulosa freq.; 16. Ceiceris albofasciata Possi, one; 17. C. labiata F., freq.; 18. C. variabilis Schr., not infrequent; 19. Philanthus triangulum F.; 20. Salius versicolor &o/./^. 5. {d) Seoliidae: 21. Tiphia femorata Z'. (e) Vespidae: 22. Odynerus parietumZ. j: 23. Polistes gallica Z., exceedingly common ; 24. P. biglumis Z., do. The following are recorded by the observers, and for the localities stated.— Krieger (Leipzis;), the Chrysidid Hedychrum nobile Scop, and the fossorial wasp Ammophila a
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