. Handbook of flower pollination : based upon Hermann Mu?ller's work 'The fertilisation of flowers by insects' . Fertilization of plants. 442 ANGIOSPERMAE—DICOTYLEDONES (c) Syrphidae: 5. Syrphus ribesii £., po-dvg. (H. M.). C. Hymenoptera. (a) Apidae: 6. Apis mellifica L. 5, exceedingly common, skg. and po-cltg. (H. M.); 7. Bombus agrorum Z'. $, 5 and i, very common, skg. (H. M.); 8. B. confusus Schenck 5, freq., skg. (H. M.); 9. B. lapidarius Z. 5 and 5, do. (H. M.); 10. B. pratorum L. 5, 5 and S, do. (); 11. B. terrester L. 5, $ and $, do. (H. M); 12. Halictus flavipes F. 5, skg. (Budd.)
. Handbook of flower pollination : based upon Hermann Mu?ller's work 'The fertilisation of flowers by insects' . Fertilization of plants. 442 ANGIOSPERMAE—DICOTYLEDONES (c) Syrphidae: 5. Syrphus ribesii £., po-dvg. (H. M.). C. Hymenoptera. (a) Apidae: 6. Apis mellifica L. 5, exceedingly common, skg. and po-cltg. (H. M.); 7. Bombus agrorum Z'. $, 5 and i, very common, skg. (H. M.); 8. B. confusus Schenck 5, freq., skg. (H. M.); 9. B. lapidarius Z. 5 and 5, do. (H. M.); 10. B. pratorum L. 5, 5 and S, do. (); 11. B. terrester L. 5, $ and $, do. (H. M); 12. Halictus flavipes F. 5, skg. (Budd.); 13. H. malachurus K. 5, do. (Budd.); 14. H. nitidus Schenck 5, do. (Budd.); 15. Megachile versicolor Sm. 5, do. (H. M., Thuringia); 16. Nomada jacobaeae Pz. 5 (H. M.); 17. N. roberjeotiana Pz. 5, skg. (H. M.); 18. Psithyrus campestris Pz. i, skg. (H. M.); 19. Sphecodes gibbus Z. J, do. (H. M.). {b) Sphegidae: 20. Ammophila sabulosa Z., skg. (H. M.); 21. Cerceris labiata F., do. (H. M.); 22. Crabro alatus Pz., do. (H. M.); 23. C. cribrarius Z. 5, do. (H. M.). (c) Tenlhredinidae: 24. Allantus scrophulariae Z., skg. (H. M.). D. Lepi- doptera. 25. Ino statices Z., do. (H. M.); 26. Zyganea filipendulae Z. do. (H. M.). Loew observed the following.— {a) In the Berlin Botanic Garden, the bees—i. Apis mellifica Z. Jj, skg.; 2, Bombus rajellus K. S, do.; 3. Chelostoma nigricorne Nyl. $, do. (3) In the Riesen- gebirge, the humble-bee I5ombus agrorum F. 5, skg. (r) In Silesia, the butterfly Hesperia comma KiG. 149. EpilobiuiH Flcischeri, Hochsi. (after Herm. MiiUer). A. Young proUndrous flower seen directly from the front (x 24). B. Middle of the same ( 7). C. A liomogamous (lower, after removal of a sepal and two petals (x 2'^). D. Style of a protogynous flower, in which an anther is begin- ning to dehisce (X 7). E. Style of a ilower, on the anthers of which a small quantity of pollen still remains (x 7). a, anther ; fi, filament; .^r, style ; sd^ nectar-cover ; St. stigma. T
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