6o2 ANGIOSPERMAE—DICOTYLEDONES 



438. Actinomeris Nutt. 



1412. A. helianthoides Nutt. — 



Visitors. — Loew saw the bee Bombus lapidarius L. i, skg., in the Berlin Botanic 

 Garden. 



439. Boltonia L'Hdrit. 



1413. B. glastifolia L'Herit. — 



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



A. Diptera. (a) Muscidae: i. Anthomyia sp. ; 2. Lucilia sylvarum Mg.; 



3. Pyrellia cadaverina Z. (b) Syrphidae ; 4. Eristalis arbustorum Z. ; 5. E. nemorum 

 L. ; 6. E. tenax L. ; 7. Helophilus floreus Z.; 8. Melithreptus scriptus Z. ; 9. Syritta 

 pipiens Z. ; 10. Syrphus ribesii Z. B. Hymenoptera. {a) Apidae : 11. Apis 

 mellifica Z., skg. {b) Vespidae : 12. Vespa germanica F. C. Lepidoptera. 

 Rhopalocera: 13. Vanessa urticae Z., skg. 



440. Helianthus L. 



Ray-florets neuter ; disk-florets hermaphrodite. 



1414. H. annuus L. (Sprengel, 'Entd. Geh.,' pp. 378-80.) In this species 

 the diameter of the heads is as much as \ m. The ray-florets are yellow in colour, 

 the disk-florets are brown. 



Visitors. — Alfken observed the following bees at Bremen. — 



I. Bombus agrorum F.i; 2. B. hortorum Z. 5, skg.; 3. B. hypnorum L. S; 



4. B. lapidarius Z. S; 5. B. pomorum Pz. J; 6. B. ruderatus F. S, skg.; 7. B. 

 sylvarum Z. 5 and S, do. ; 8. B. terrester Z. 5 ; 9. Coelioxys acuminata Nyl. $, do.; 

 10. Megachile circumcincta Z. $; 11. Psithyrus campestris Pz. $; 12. P. rupestris 

 F. J. Also (Bozen), the bee Xylocopa violacea Z. 5, occasional, skg. ; and the 

 Pentatomid Carpocoris baccarum Z., freq., skg. The former was seen flying from 

 one head to another as late as 10 p.m. 



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

 Knuth, 3 bees, skg. and po-cltg. (i. Apis mellifica Z. $ ; 2. Bombus lapidarius 

 Z. ; 3. B. terrester Z. $ and 5), 2 flies, po-dvg. (Eristahs sp. and PoUenia rudis F^, 



2 Hemiptera (Calocoris bipunctatus F. and Lygus pabulinus Z.), and an earwig 

 (Forficula auricularia Z., dvg. the florets). Sprengel also records the earwig as 

 a common visitor. Sickmann (Osnabruck), the Pompilid Pseudagenia carbonaria 

 Scop., rare. Schletterer (Tyrol), the bee Halictus alternans III. 



1415. H. multiflorus L. — In this species the pollen projects from the anther- 

 cylinder during the first stage of anthesis, and the stylar branches during the second 

 stage. 



Visitors. — The following were recorded by the observers named. — 

 Delpino the bee Heriades truncorum Z. Herm. Miiller, 2 bees (Megachile 

 centuncularis Z., po-cltg., and Halictus zonulus Sm. 5, skg. and po-dvg., and 



3 hover-flies), skg. and po-dvg. '(i. Eristalis tenax Z. ; 2. Syrphus pyrasti Z. ; 

 3. S. ribesii Z.). 



1416. H. atronibens L. — 



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

 A. Diptera. Syrphidae: i. Eristalis nemorum Z. ; 2. E. tenax Z. ; 3. 

 Syrphus balteatus Deg. B. Hymenoptera. Apidae: 4. Apis mellifica Z. 5, 

 skg. and po-cltg. ; 5. Bombus terrester Z. S, skg. ; 6. Psithyrus vestalis Fourcr. 

 t. do. 



