COMPOSITAE 673 



po-cltg. (H. M., Thuringia) ; 21. Prosopis nigrita F. J, in large numbers, skg. (H. M., 

 Bavarian Oberpfalz). D. Lepidoptera. Rhopalocera: 22. Colias hyale L., skg. 

 (H. M., Thuringia). 



The following were recorded by the observers, and for the localities stated. 

 Knuth (Kiel), 6 skg. and po-dvg. hover-flies 1. Eristalis sp. ; 2. Melanostoma 



sp. ; 3. Platycheirus podagratus Zett. , 4. Syrphus balteatus Deg. J; 5. S. ribesii Z. ; 



6. S. umbellatarum F. Alfken (Bremen), 4 bees 1. Eriades nigricornis Nyl. 5; 



2. Halictus calceatus Scop. $; 3. H. fiavipes Pz. 5; 4. H. morio F. 5. Schenck 

 (Nassau), 4 bees 1. Anthidium punctatum Ltr.) 2. Halictus leucozonius Schr.', 



3. H. lucidulus Schenck; 4. H. sexnotatulus Nyl. (=H. quadrifasciatus Schenck). 

 Friese, the bee Panurgus banksianus K. : (Alsace), the bee Dasypoda plumipes Pz. 

 Loew (Brandenburg) (' Beitrage,' p. 39), a hover-fly (Eristalis sepulcralis Z.) and 

 3 bees ( 1. Dasypoda hirtipes F. S, skg.; 2. Halictus cylindricus F. J, do.; 3. H. 

 sexnotatus K. j, do.). 



1609. C. Endivia L. (Knuth, ' Blutenbiol. Herbstbeob.') The flower 

 mechanism of this species agrees with that of C. Intybus. The blue florets 

 develop to a great size and spread out their ligules to attract insects, while 

 the reproductive organs form a circle in the middle of the inflorescence. In 

 both species the ligules are about 2 cm. long and 6-7 mm. broad. In C. Endivia 

 the diameter of the head is 4-5 cm.; while in C. Intybus it is somewhat smaller 

 as a rule. The number of florets in an inflorescence is 20-30 in the former 

 species, 12-20 in the latter. 



Visitors. Knuth observed a hover-fly (Eristalis sp.) and a butterfly (Pieris sp.). 



488. Thrincia Roth. 



1610. T. hirta Roth (=Leontodon hirtus L.). 



Visitors. Herm. Mailer gives the following list for Westphalia and the Bavarian 

 Oberpfalz ('Fertilisation,' pp. 358-9, 'Weit. Beob.,' Ill, p. 97). 



A. Coleoptera. Buprestidae: 1. Anthaxia quadripunctata Z., in copula on the 

 florets. B. Diptera. Syrphidae : 2. Eristalis arbustorum Z., freq., skg. and po-dvg. ; 

 3. E. sepulcralis Z., po-dvg. ; 4. E. tenax Z., freq., skg. and po-dvg. ; 5. Syrphus 

 balteatus Beg., do. C. Hymenoptera. (a) Apidae : 6. Andrena denticulata K. $, 

 skg. and po-dvg. (Sid., Thuringia) ; 7. A. fulvago Chr. 5, po-cltg. (Thuringia) ; 8. 

 A. fulvescens Sm. 5, do. (Thuringia); 9. A. fulvicrus K. 5, po-cltg.; 10. Bombus 

 confusus Schenck J", skg.; 11. B. tristis Seidl. J, do. (Liebenau near Schwiebus); 

 12. Cilissa melanura Nyl. 5; 13. Dasypoda hirtipes F. J, skg. (Liebenau near 

 Schwiebus); 14. Dufourea vulgaris Schenck 5 and J, po-cltg. and skg. ; 15. Halictus 

 cylindricus F. $ and J, do.; 16. H. flavipes F. &, skg.; 17. H. leucozonius Schr. 

 5 and J, very numerous, skg. and po-cltg. (Thuringia); 18. H. lugubris K. J, skg. ; 

 19. H. maculatus Sm. J, do.; 20. H. sexcinctus F. 5, skg. and po-cltg.; 21. H. 

 smeathmanellus K. 5, po-cltg.; 22. H. villosulus K. $, do.; 23. Panurgus calcaratus 

 Scop. $ and $, freq., po-cltg. and skg. (b) Sphegidae : 24. Cerceris variabilis Schr. 5, 

 skg. D. Lepidoptera. \d) Noctuidae: 25. Plusia gamma Z., skg. (b) Rhopalocera: 

 26. Pieris napi Z., skg. 



The following were recorded by the observers, and for the localities stated. 

 Alfken and Hoppner (Bremen), 10 bees 1. Bombus agrorum F. 5 ; 2. B. areni- 

 cola Ths. 5; 3. B. lapidarius Z. 5; 4. B. sylvarum Z. $; 5. B. variabilis Schmiedckn. 

 5; 6. Halictus calceatus Scop. 5 and J; 7. H. flavipes F. 5 and J; 8. H. leucozonius 

 Schr. $ and S; 9. H. rubicundus Chr. 5 and J; 10. H. zonulus Sm. 5 and S. 

 MacLeod (Flanders), 2 humble-bees, 5 hover-flies, a Muscid, and 3 Lepidoptera 

 (Bot. Jaarb. Dodonaea, Ghent, v, 1893, pp. 428-9). 



DAVIS. II XX 



