. Handbook of flower pollination : based upon Hermann Mu?ller's work 'The fertilisation of flowers by insects' . Fertilization of plants. UMBELLIFERAE 467 to develop. The pollen-grains are white in colour, ellipsoidal, tuberculated, 63 fx. long and 25 /x broad. Visitors.—Herm. Miiller (H. M.) and myself (Kn.) observed the following.— A. Coleoptera. Dervicstidae: i. Anthrenus pimpinellae F. (H. M.). B. Di- ptera. [a) Miiscidac : 2. Lucilia caesar L. (Kn.); 3. L. cornicina F., nect-lkg. (H. M., Kn.); 4. Miltogramma punctata Mg. (H. M.); 5. Onesia sepulcralis, Mg., freq. (Kn.); 6. PoUenia rudis Z
. Handbook of flower pollination : based upon Hermann Mu?ller's work 'The fertilisation of flowers by insects' . Fertilization of plants. UMBELLIFERAE 467 to develop. The pollen-grains are white in colour, ellipsoidal, tuberculated, 63 fx. long and 25 /x broad. Visitors.—Herm. Miiller (H. M.) and myself (Kn.) observed the following.— A. Coleoptera. Dervicstidae: i. Anthrenus pimpinellae F. (H. M.). B. Di- ptera. [a) Miiscidac : 2. Lucilia caesar L. (Kn.); 3. L. cornicina F., nect-lkg. (H. M., Kn.); 4. Miltogramma punctata Mg. (H. M.); 5. Onesia sepulcralis, Mg., freq. (Kn.); 6. PoUenia rudis Z'. (Kn.); 7. Sarcophaga carnaria Z.(Kn.); 8. Scaiophaga merdaria Z. (Kn.); 9. S. stercoraria Z., very numerous (Kn.). (b) Syrphidae: 10. Eristalis arbustorum Z., po-dvg. and nect-lkg. (H. M., Kn.); 11. E. nemorum Z., common (Kn.); 12. Helophilus floreus Z. (Kn.); 13. Melanostoma gracilis Mg. (Kn.): 14. Syritta pipiens Z. (Kn.); 15. Syrphus ribesii Z. (Kn.). C. Hemiptera. 16. Lygus (Orthops) kalonii Z. (Kn.). D. Hymenoptera. {a) Apidae : 17. An- drena albicrus K. S, skg. (H. M.); 18. Bombus lapidarius Z. (Kn.); 19. B. terrester. L. (Kn.); 20. Prosopis armillata Nyl. S, skg. (H. M.); 21. P. signata Pz. 5, Fig. 158. Astrantia iiiinur. L. (.il'lri- Hcrni, MuIKm). A. IK iniapliiudilc ilowcr i[i tin- (irst (malt^i s-tage. B. Upper part of a hermaphrodittt flower in tlie second (female) stag;n. C. Male flower witii vestiges of ovary and styles. D. Male flower without any such \estiges. E. Ficshv disk (with lo ncctar- pitS' on the ovary of a mali- flower. 2, ^^ 4, 5, stamens; j-r, style ; 07', o\ ary ; />, petal: s, sepal: si^ stigma. (H. M.). {b) Sphegidae: 22. Cerceris arenaria Z. (Kn.); 23. Oxybelus uniglumis Z. (Kn.). (f) Vesptdae : 24. Odynerus parietum Z. (Kn.); 25. Vespa sylvestris 6'fci^. (Kn.). E. Lepidoptera. Rhopalocera: 26. Pieris sp., skg. (Kn.); 27. Vanessa atalanta Z., do. (Kn.). Herm. Miiller saw 7 beetles, 3 flies, 2 Hymenoptera, and a Lepidopterid in thu A
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