PL ANT A GIN A CEAE 



325 



Schulz noticed not only gynodioecism, but also gynomonoecism, andromonoecism, 

 and androdioecism. 



Visitors. — Knuth observed (Kiel Botanic Garden) the butterfly Vanessa io Z., 

 vainly searching for nectar, and the following in Thuringia (Eisenach, Coburg, and 

 Schwarzburg), and in meadows at Cassel (July, '94). — 



A. Coleoptera. (a) Ceramhycidae : i. Strangalia bifasciata Miill., po-dvg. 

 (b) Nitidulidae : 2. Meligethes sp., po-dvg. B. Diptera. Syrphidae: all po-dvg. : 

 3. Eristalis sp. ; 4. Melanostoma mellina Z. ; 5. Rhingia rostrata Z.; 6. Syrphus 

 balteatus ZJi'^. ; 7. S. sp. ; 8. Volucella pellucens Z. C. Hymenoptera. Apidae: 

 all po-cltg. : 9. Apis mellificaZ. ; 10. Bombus lapidarius Z. 5; n- B. terrester Z. 

 5 and 5 ; 12. Halictus cylindricus Z'. 



Fig. 346. Plantago media, L. (after Herm. Miiller). (1-5) A form growing on dry sunny slopes at 

 Rixberger Hill (Lippstadt). (i) Bud. (2) Opening flower. (3) Completely expanded flower. 



(4) Corolla. (5) Pistil. (6-8) Another form growing in damp and rather shady spots in the same locality. 

 (6) Mature flower. (7) Corolla. (8) Pistil. a, anthers ; yf, filaments ; oi^, ovary ; ^, petals ; J, sepals ; 

 St, stigma. 



Herm. Muller gives the following list, in which Budd. = Buddeberg, and 

 T. = Thuringia. — 



A. Coleoptera. (a) Ceravihycidae: i. Strangalia bifasciata MiilL, po-dvg. 

 (T.) ; 2. S. nigra Z., in large numbers, gnawing the anthers, (b) Telephoridae : as 2 : 

 3. Anthocomus fasciatus Z. ; 4. Malachius aeneus Z. (c) Nitidulidae : 5. Meligethes, 

 not infreq. (d) Oedevieridae : 6. Oedemera marginata F., dvg. the anthers (T.). 

 B. Diptera. (a) Muscidae : 7. Spilogaster semicinerea Wied., very common, po- 

 dvg. (6) Stratiomyidae : 8. Chrysomyia formosa Scop, (c) Syrphidae : all po-dvg. : 

 9. Ascia podagrica F.; 10. Chrysotoxum festivum Z. (Kitzingen) ; 11. Eristalis 

 arbustorum Z., very common; 12. Helophilus floreus Z. (T.) ; 13. Melanostoma 

 ambigua Fall; 14. M. mellina Z. ; 15. Rhingia rostrata Z. (H. M., Budd.); 



