ROSACEAE 



373 



Visitors. Herm. Miiller (H. M.), and myself (Kn.) observed the following. 

 A. Coleoptera. (a) Malacodermata : i. Dasytes flavipes F., nect-lkg. and dvg. 

 the anthers (H. M.). (b) Nitidulidae : 2. Meligethes, very freq., po-dvg. (H. M.). 

 B. Diptera. (a) Conopidae : 3. Sicus ferrugineus Z., nect-lkg. (H. M.). (b) Cuti- 

 cidae: 4. Culex pipiens L., skg. (H. M.). (c) Muscidae: 5. Anthomyia, very freq., 

 nect-lkg. (H. M.) ; 6. Lucilia cornicina F., freq., nect-lkg. (H. M.) ; 7. L. sylvarum 

 Mg., do. (H. M.) ; 8. Sarcophaga carnaria L., freq., nect-lkg. (H. M.) ; 9. Scatophaga 

 merdaria F., do. (H. M.); 10. Sepsis, very freq., nect-lkg. (H. M.); 11. Smaller 

 Muscids, nect-lkg. (Kn.). (d) Stratiomyidae: 12. Sargus cuprariusZ., freq., nect-lkg. 

 and po-dvg. (H. M.). (e) Syrphidae: 13. Eristalis arbustorum Z., freq., nect-lkg. and 

 po-dvg. (H. M.); 14. E. nemorum Z., skg. or po-dvg. (Kn.); 15. E. sepulcralis Z., 

 do. (H. M.); 16. Helophilus floreus Z., as 13. (H. M.); 17. H. pendulus Z., do. 

 [H. M.); 18. Melithreptus taeniatus Mg., do. (H. M.); 19. Syritta pipiens Z., do. 

 (H. M.); 20. Syrphus pyrastriZ., skg. or po-dvg. (Kn.); 21. Volucella bombylansZ., 

 do. (Kn.) ; 2 2. V. pellucens Z., do. (H. M.). (/) Tabanidae : 23. Chrysops caecutiens 

 L. t, nect-lkg. or po-dvg. (H. M.). C. Hymenoptera. {a) Apidae: 24. Apis 

 mellifica Z. J, freq., nect-lkg. (H. M., Kn.); 25. Halictus zonulus Sm. $, nect-lkg. 

 [H.M.). (6) Sphegidae: 26. Oxybelus bellus Dahlb., very freq., nect-lkg. (H. M.) ; 

 27. O. uniglumis Z., occasional, nect-lkg. (H. M.). 



882. P. alchemilloides Lapeyr. MacLeod (' Pyreneenbl.,' pp. 25-9) has fully 

 described the mechanism of this Pyrenean species. The diameter of the white 

 dowers is 20 mm. Between the carpels and the bases of the stamens there is a 

 lectar-groove bounded by two hairy ridges, and most conveniently accessible at five 

 spots. The flowers are almost homogamous: probably the anthers dehisce a little 

 Defore the stigmas are mature. Insect visitors may effect either cross- or self- 

 Dollination. The latter can only take place automatically with difficulty, for the 

 inthers are turned away from the stigmas; but now and then it is brought about 

 3y a stamen remaining erect. 



Visitors. MacLeod observed 2 Empids and 5 Muscids in the Pyrenees. 



883. P. sterilis Garcke (=Fragaria sterilis Z., P. Fragariastrum Ehrh., and 

 D . Fragaria Poir.). (MacLeod, Bot. Jaarb. Dodonaea, Ghent, iii, 1891, pp. 429-30, 

 ri, 1894, pp. 314-15.) MacLeod examined the mechanism of the white flowers of 

 his species in the Pyrenees and in Belgium. In the former region the diameter 

 )f the flower is 20 mm.; in the latter only 11-12 mm. Between the stamens 

 ind the carpels there is a pentagonal hairy orange-coloured (Belgium) or reddish- 

 )rovvn (Pyrenees) nectar-ring. In late anthesis the stamens bend inwards so much 

 hat automatic self-pollination results from the contact between anthers and stigmas, 

 n Belgium the flowers are slightly protogynous. 



Visitors. MacLeod observed small beetles and flies, and an Acarid in Flanders ; 

 tnd a bee, a Muscid, and a Lepidopterid in the Pyrenees. 



BurkillCFertlsn. of Spring Fls.') noticed the following on the Yorkshire coast. 

 A. Coleoptera. Curculionidae: 1. Apion nigritarse K., skg. B. Diptera. 

 a) Muscidae: 2. Coelopa sp., po-dvg.; 3. Lucilia cornicina F., skg.; 4. Onesia 

 :ognata Mg., do.; 5. Sepsis nigripes Mg., skg.; 6. Siphona geniculata Beg., skg.; 

 '. one other Muscid. (b) Phoridae : 8. Phora sp. C. Hymenoptera. (a) Apidae: 

 ). Andrena clarkella K. & and $; 10. A. gwynana K. t, skg., $ po-cltg. (b) Formi- 

 idae : 11. Formica fusca Z., skg. (c) Ichneumonidae : 12. three small sp. 



884. P. Sommerfeltii Lehm., 885. P. Ranunculus Lange, 886. P. Vah- 

 iana Lehm., 887. P. Frieseana Lange, and 888. P. tridentata Ait. These and 



