618 ANGI0SPERMAED1C0TYLED0NES 



1462. A. grandifolia Frivald. 



Visitors. Loew observed the following in the Berlin Botanic Garden. 



A. Diptera. (a) Muscidae : 1. Anthomyia sp. (b) Syrphidae : 2. Eristalis 

 arbustorum Z. ; 3. E. nemorum Z. ; 4. Helophilus floreus Z. ; 5. Syritta pipiens Z. 

 B. Hymenoptera. Sphegidae: 6. Eumenes coarctatus Z. C. Lepidoptera. 



Rhopalocera: 7. Pieris brassicae Z., skg. 



1463. A. nobilis L. 



Visitors. Loew observed 2 hover-flies (Eristalis arbustorum Z., and E. nemorum 

 Z.) and a bee (Sphecodes gibbus Z. 5, skg.) in the Berlin Botanic Garden. 



1464. A. tanacetifolia All., var. dentifera DC. 



Visitors. Loew observed the hover-fly Syritta pipiens Z. in the Berlin Botanic 

 Garden. 



454. Anthemis Mich. 



Ray-florets white or yellow in colour, somewhat elongated. Heads larger than 

 in Achillea, but structure of the style the same. 



1465. A. arvensis L. (Herm. Miiller, 'Fertilisation,' p. 329; Knuth, 'Bl. u. 

 Insekt. a. d. nordfr. Ins.' pp. 90, 158.) Hermann Miiller describes the heads of J this 

 species as being 21-7 mm. in diameter, of which 5-7 mm. are taken up by the 

 yellow disk. The number of florets in the latter reaches several hundreds, while 

 Ludwig states that there are usually 5, 8, or 13 ray-florets. The sweeping-hairs 

 of the female florets are considerably shorter than those of the hermaphrodite 

 ones. {Cf. Fig. 202, 8.) 



Automatic self-pollination is always possible, as in Achillea Millefolium. 

 Visitors. Herm. Miiller gives the following list. 



A. Coleoptera. (a) Cerambycidae : 1. Leptura livida Z. (b) Curculionidae'. 

 2. Bruchus sp. (c) Elaleridae: 3. Athous niger Z. B. Diptera. (a) Muscidae: 

 4. Echinomyia tessellata F., po-dvg. ; 5. Scatophaga merdaria F., do. ; 6. S. sterco- 

 raria Z., do. (b) Siraiiomyidae : 7. Nemotelus pantherinus Z., extremely numerous. 

 (c) Syrphidae : all po-dvg. : 8. Eristalis arbustorum Z. ; 9. E. nemorum Z. ; 

 10. E. sepulcralis Z. ; 11. E. tenax Z. C. Hymenoptera. (a) Apidae: 12. 

 Andrena fulvicrus K. 5, skg. and po-dvg. ; 13. A. minutula K. J ; 14. A. nana K. $, 

 skg.; 15. A. nigroaenea K. $, skg. and po-cltg. ; 16. A. schrankella Nyl. 5, do.: 

 17. Apis mellifica Z. $, skg.; 18. Colletes daviesanus K. 5 and t, freq., skg. and 

 po-cltg. ; 19. Halictus lucidulus Schenck 5 ; 20. H. nitidiusculus K. 5. (b) Sphegidae : 

 21. Cerceris variabilis Schr. J ; 22. Crabro alatus Pz. 5 and $ ; 23. C. cribrarius Z. $. 

 (c) Tenthredinidae : 24. Allantus nothus Klg. 



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



Knuth (Schleswig-Holstein), 2 bees and 5 flies ; (Helgoland), the Muscid Lucilia 

 caesar'Z. Wiistnei (Alsen), the bee Colletes daviesanus K. Schmiedeknecht (Thu- 

 ringia), the bee Osmia montivaga Mor. Redtenbacher (Austria), the Cistelid Podonta 

 nigritia F. Schletterer (Pola). 8 bees 1. Andrena convexiuscula K., var. fuscata 

 A'.; 2. A. cyanescens Nyl. ; 3. A. nana .AT. ; 4. Eriades truncorum Z. ; 5. Halictus 

 calceatus Scop. ; 6. H. fasciatellus Schenck; 7. H. tetrazonius King; 8. Prosopis 

 hyalinata Smith, var. corvina Furs/. Kohl (Tyrol), the very common sphegid Crabro 

 cribrarius Z. 





