LABIATAE 285 



Z. 5, do.; 13. B. rajellus K. 5, do. ; 14. B. scrimshiranus K. 5 and 5, do., creeping 

 very far into the flowers; 15. B. sylvarum L. 5, do.; 16. B. terrester Z. 5, skg. by 

 perforation ; 17. Eucera longicornis Z. S, skg. ; 1 8. Halictus levigatus K. 5, po-cltg. ; 

 19. Melecta armata Pz. 5, skg. ; 20. Xylocopa violacea Z. 5 and $, do. (Strasburg). 



Alfken records the following 21 bees, skg., for Bremen. 



I. Anthidium manicatum Z. 5; 2. Bombus agrorum F. 5 and ; 3- B. Areni- 

 cola Thorns. 5; 4. B. derhamellus K.^; 5. B. distinguendus A/cr. 5, ^ skg.; 6. B. 

 hortorum Z. 5, freq. and 5; 7- B. hortorum Z., var. nigricans Schmiedekn. 5; 8. B. 

 jonellus .AT. 5; 9. B. lapidarius Z. j; 10. B. lucorum Z. j; 11. B. muscorum F. 5 

 and 5; 12. B. pratorum Z. 5 ; 13. B. ruderatus ^. ? ; 14. B. sylvarum Z. 5, 5, and J ; 

 15. B. subterraneus Z. 5; 16. B. terrester Z. j, perforating even the flower-buds; 

 17. B. variabilis Schmiedekn. J; 18. Osmia caerulescens Z. 5 and J; 19. O. rufa 

 Z. 5 ; 20. Psithyrus barbutellus A'. 5; 21. P. vestalis Fourcr. 5. 



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

 stated. 



Knuth (Schleswig-Holstein), the honey-bee, as a nectar-thief, and 2 humble-bees 

 Bombus lapidarius Z., skg., and B. terrester Z., as a nectar-thief. Herm. Miiller 

 (Alps), 6 humble-bees. Hoppner (Bremen), 2 bees Andrena convexiuscula K. and 

 Bombus proteus Gerst. Schmiedeknecht (Thuringia), 5 bees i. Bombus agrorum 

 F.^', 2. B. hortorum Z. 5 ; 3. B. hypnorum Z. 5; 4. B. jonellus ^.5; 5. 

 Osmia aurulenta Pz. 5 and $. Friese (Thuringia), the humble-bee Bombus hortorum 

 Z. : (Baden and Alsace), the bee Podalirius acervorum Z. : (Hungary), the bee Halictus 

 santhopus K. 5 and $. Krieger (Leipzig), 5 bees i. Anthidium manicatum Z. ; 

 2. Crocisa scutellaris F.\ 3. Melecta armata 7^2. (=M. punctata ^.); 4. Osmia 

 rufa Z. ; 5. Podalirius vulpinus Pz. Hoff"er (Steiermark), 2 bees Bombus agrorum 

 F. J and 5. and B. argillaceus Scop. 5. Schletterer (Tyrol), 5 bees i. Bombus 

 argillaceus Scop.; 2. B. hortorum Z. ; 3. B. variabilis Schmiedekn.; 4. Eriades 

 florisomnis Z. ; 5. Osmia xanthomelaena K. { O. fuciformis Gersl). von Dalla 

 Torre (Tyrol), 2 humble bees Bombus mesomelas Gerst., and B. muscorum F. 

 Loew (Brandenburg), 2 bees Bombus hortorum Z. 5, skg. and po-cltg., and Osmia 

 bicornis Z. 5, skg. (' Beitrage,' p. 44) : (Switzerland), 2 bees Anthophora sp. 5, skg., 

 and Bombus sylvarum Z. 5. do. (op. cit., p. 61): (Berlin Botanic Garden), 4 bees 

 1. Anthidium manicatum Z. $ and 5, skg.; 2. Apis mellifica Z. 5, vainly skg., its 

 head and thorax dusted with pollen ; 3. Bombus pratorum Z. 5, po-cltg. ; 4. B. 

 terrester Z. Ji vainly skg. : and on the var. verticillatum the humble-bee Bombus 

 lapidarius Z. 5, po-cltg. MacLeod (Flanders), 6 humble-bees, and 2 hover-flies 

 (Bot. Jaarb. Dodonaea, Ghent, vi, 1894, p. 372). Scott-Elliot (Dumfriesshire), 

 3 humble-bees, and a hover-fly ('Flora of Dumfriesshire,' p. 140). 



2313. L. mactilatum L. (Herm. Miiller, 'Fertilisation,' pp. 496-7, 'Alpen- 

 blumen,' p. 311, ' Weit. Beob.,' iii, pp. 46-7; Kirchner, 'Flora v. Stuttgart,' p. 622; 

 Loew, ' Blutenbiol. Floristik,' p. 391 ; Knuth, ' Bloemenbiol. Bijdragen.') The flowers 

 of this species are purple-red in colour, a darker red and white patch on the lower lip 

 serving as a nectar-guide. Their mechanism agrees with that of L. album, but the 

 corolla-tube is 15-17 mm. long, so that a humble-bee which pushes its head 5 mm. 

 deep into the enlargement of the corolla-tube must have a proboscis 10-12 mm. long 

 in order to reach to the base of the flower. This species again is perforated by 

 Bombus terrester Z. 



Visitors. Herm. Miiller (H, M.) and Buddeberg (Budd.) give the following 

 list. 



A. Diptera. Syrphidae : i. Rhingia rostrata Z., vainly trying to suck (H. M.), 

 B. Hymenoptera. Apidae : 2. Anthophora aestivalis Pz. j, freq., skg. and po-cltg. 

 (H. M., Thuringia); 3. A. pilipes F. 5 and t, skg. (H. M., Thuringia); 4. Apis 



