6i8 ANGIOSPERMAE—DICOTYLEDONES 



1462. A. grandifolia Frivald. — 



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



A. Diptera. {a) Muscidae: i. Anthomyia sp. (V) Syrphidae : 2. Eristalis 

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

 B. Hymenoptera. Sphegidae: 6. Eumenes coarctatus L. 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, 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. Muller gives the following list. — 



A, Coleoptera. (a) Cerambycidae : i. Leptura livida Z. (3) Curculionidae: 

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

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

 raria Z., do. (3) Stratioviyidae : 7. Nemotelus pantherinus Z., extremely numerous. 

 (f) 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, sk<;. and po-dvg. ; 13. A. minutula K.t>: 14. A. nana K. 5, 

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

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

 po-cltg.; 19. Halictus lucidulus 6'(r,^<'«f.^ 5 ; 20. H. nitidiusculus .A!". 5. {b) Sphegidae : 

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

 (() Tenthredinidae : 24. AUantus 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 

 caesarZ. Wiistnei (Alsen), the bee Colletes daviesanus A'. Schmiedeknecht (Thu- 

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

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

 K.; 2. A. cyanescens Ay-'/. ; 3. A. nana A'.; 4. Eriades truncorum Z. ; 5. Halictus 

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

 hyalinata Sviith, var. corvina Fiirst. Kohl (Tyrol), the very common sphegid Crabro 

 cribrarius Z. 



