ROSACEA E 383 



on they may also bring about self-pollination, for the stigmas remain receptive till the 

 innermost anthers dehisce. The latter may also occur automatically. 

 Visitors. Vide infra. 



917. S. salicifolia L., and 918. S. ulmifolia Scop. (Herm. Muller, ' Fertili- 

 sation/ pp. 224-6, 'Weit. Beob.,' II, p. 243.) These species are cultivated along 

 with S. sorbifolia as ornamental shrubs. 



Visitors. Herm. Muller gives the following list for these two species and 

 S. sorbifolia, all three of which flower at the same time. 



A. Coleoptera. (a) Cerambycidae: 1. Clytus arietis Z., nect-lkg. ; 2. Gram- 

 moptera ruficornis F., do.; 3. Leptura livida F., very freq., nect-lkg.; 4. Strangalia 

 armata Hbst., nect-lkg. ; 5. S. attenuata Z., freq., nect-lkg. ; 6. S. nigra Z., nect-lkg. 

 (b) Cistelidae: 7. Cistela murina Z., freq., dvg. the anthers and petals, (c) Der- 

 mestidae : 8. Anthrenus muscorum Z., very freq., nect-lkg. ; 9. A. pimpinellae F, do. ; 

 10. A. scrophulariae Z., do.; n. Attagenus pellio Z., do.; 12. Byturus fumatus F., 

 do. (d) Elateridae: 13. Cardiophorus cinereus Hbst., nect-lkg.; 14. Lacon murinus, 

 Z., do. (e) Lagriidae : 15. Lagria hirta Z., nect-lkg. (/") Mordellidae : 16. Anaspis 

 frontalis Z., freq., nect-lkg.; 17. A. maculata Fonrc, nect-lkg. (g) Nitidulidae : 

 18. Meligethes, freq. (h) Scarabaeidae: 19. Cetonia aurata Z. ; 20. Phyllopertha 

 horticola Z., dvg. the flowers; 21. Trichius fasciatus Z., do. (i) Telephoridae : 

 22. Cantharis fulva Scop. ; 23. Dasytes flavipes F.; 24. Malachius bipustulatus ., 

 dvg. the anthers. B. Diptera. (a) Bibionidae: 25. Bibio hortulanus Z., nect-lkg. 

 (b) Chironomidae : 26. Ceratopogon sp., in large numbers, skg. (c) Conopidae: 

 27. Myopa polystigma Fond., skg. ; 28. Physocephala rufipes F., do. (d) Empidae: 

 29. Empis opaca F, freq., skg.; 30. E. punctata F., skg.; 31. E. tesselata F very 

 freq., skg. (e) Muscidae: 32. Sp. of Anthomyia; 33. Cyrtoneura simplex Loew; 

 34. Echinomyia fera Z. ; 35. E. magnicornis Zett. (Borgstette) ; 36. Gymnosoma 

 rotundata Z. ; 37. Lucilia cornicina F., skg.; 38. L. sylvarum Mg., do.; 39. Mesem- 

 brina meridiana Z.; 40. Musca corvina F. ; 41. Onesia cognata Mg. ; 42. O. floralis 

 R.-D.; 43. Sarcophaga carnaria Z., skg. (/) Stratiomyidae : 44. Odontomyia 

 viridula F., skg. ; 45. Stratiomys riparia Mg., do. (g) Syrphidae : 46. Ascia lanceo- 

 lata Mg., skg.; 47. A. podagrica F., do.; 48. Cheilosia gilvipes Zett., skg. and 

 po-dvg. ; 49. Chrysogaster viduata Z.; 50. Chrysotoxum festivum Z. ; 51. Eristalis 

 arbustorum Z., freq., skg. and po-dvg. ; 52. E. intricarius Z., do.; 53. E. nemorum 

 Z., do. ; 54. E. pertinax Scop., do. ; 55. E. sepulcralis Z., do. ; 56. E. tenax Z., do. ; 

 57. Helophilus fioreus Z., freq., skg.; 58. Melithreptus strigatus Staeg.; 59. Pipiza 

 funebris Mg. ; 60. Rhingia rostrata Z., in great numbers, skg. ; 61. Syritta pipiens 

 Z., do.; 62. Syrphus excisus Zett.; 63. S. ribesii Z., po-dvg. ; 64. Volucella bombylans 

 Z., var. plumata Mg. ; 65. Xylota ignava Pz. ; 66. X. lenta Mg. ; 67. X. segnis Z. 

 (k) Tabanidae: 68. Chrysops caecutiens Z. J, skg. (/) Tipulidae: 69. Pachyrhina 

 pratensis Z., nect-lkg. C. Hymenoptera. (a) Apidae : 70. Andrena albicans Mull. 

 $, freq., skg. and po-cltg. ; 71. A. albicrus K. 5 and J, do. ; 72. A. dorsata K. $, do.; 

 73. A. fucata Sm. $, do.; 74. A. fulvicrus K. J, skg.; 75. A. nigroaenea K. $, do. ; 

 76. A. parvula K. 5, freq., skg. and po-cltg. ; 77. A. schrankella Nyl. S, skg.; 78. A. 

 irimmerana K. $, do.; 79. Apis mellifica Z. 5, skg. and po-cltg.; 80. Bombus 

 muscorum F. 5, po-cltg.; 81. B. scrimshiranus K. $f, running quickly over the 

 .nflorescences and po-cltg. ; 82. B. terrester Z. $, skg. and po-cltg. ; 83. Halictus 

 flavipes F. 5; 84. H. sexnotatus K. $, po-cltg. ; 85. H. sexstrigatus Schenck $>, skg. ; 

 86. H. villosulus K. 5, do.; 87. Nomada ruficornis Z. $, do. ; 88. Osmia rufa Z. $, 

 po-cltg. ; 89. Sphecodes gibbus Z. 5, skg. (Budd.). (b) Chrysididae : 90. Hedrychum 

 lucidulum F. J. (c) Evaniidae: 91. Foenus sp., nect-lkg. (Budd.). (d) Formicidae: 

 92. Lasius niger Z. 5, nect-lkg. ; 93. Myrmica levinodis Nyl. J; 94. Numerous small 

 ants, nect-lkg., and preying on the minute black midges .often found nect-lkg. 

 (e) Ichneumonidae : 95. Various sp. (/) Sphegidae: 96. Ammophila sabulosa Z. ; 



