382 ANGIOSPERMAEDICOTYLEDONES 



catkins; 12. One other small Muscid, do. {d) Stratiomyidae '. 13. Lasiopa sp.,| 

 on $ and J catkins, {e) Syrphidac. 14. Eristalis pertinax Scop., on J and 5 

 catkins, skg.; 15. Melanostoma quadrimaculata Verral, do. C. Hymenoptera. 

 {a) Apidae'. 16. Andrena clarkella K. J, on 5 catkins; 17. A. gwynana K. 5,1 

 on S and 5 catkins, po-cltg. ; 18. Apis mellifica Z. 5? do. J; 19. Bombus horto- 

 rum Z., do. S; 20. B. terrester Z., do., 5 freq., skg. and po-cltg. (^) IchneuA 

 monidae : 21. Ichneumon sp., upon 5 and S catkins. D. Lepidoptera. Rhopalocera :| 

 22. Vanessa urticae Z., on S and 5 catkins, skg. 



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



Knuth (on S. amita), a skg. Muscid (Scatophaga stercoraria Z.) and 2 skg.i 

 and po-cltg. bees (Apis, and Bombus terrester Z. 5 and 5)- Loew (Brandenburg,! 

 ' Beitrage,' p. 38), a Muscid (Conia capitata Deg^ and a Syrphid (Syrphus lunulatus 

 Mg., skg.) ; (Berlin Botanic Garden) Apis, skg. Schmiedeknecht (Thuringia), 

 9 bees I. Andrena congruens Schmiedekn. ; 2. A. dubitata Schenck', 3. A. extricatai 

 Sm.', 4. A. pilipes F. (=A. carbonaria Z.) ; 5. A. eximia Sm.; 6. A. albicans 

 Mull. ; 7. A. albicrus K.) 8. A. tibialis K.; 9. Bombus lapidarius Z., a $. Scott- 

 Elliot (Dumfriesshire), a humble-bee and an Empid (freq.) (' Flora of Dumfriesshire,' 

 p. 157). Schenck (Nassau), 6 bees i. Andrena apicata Sm. $ ; 2. A. clarkella K. 

 3. A. gwynana K. ; 4. A. trimmerana K. ; 5. Nomada fabriciana Z. ; 6. N. lineola 

 Pz. Friese (Fiume), 2 bees i. Andrena clarkella K., and 2. A. morawitzi Ths., 

 var. paveli Mocs. 



S. cinerea Z. (Warnstorf, Schr. natw. Ver., Wernigerode, xi. 1896.) 

 Warnstorf describes the pollen-grains in this species as dark-yellow, ellipsoidal,, 

 closely tuberculate, on an average 30-5 fi long, and 1 7 /a broad. 



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



Alfken (Bremen), 9 bees i. Andrena apicata Sm. $ and S ; 2. A. clarkella K. 

 5 and J ; 3. A. nigroaenea K. 5 and J ; 4. A. trimmerana K. 5 and $ ; 5. Bombus 

 jonellus K. 5 ; 6. B. terrester Z. 5 ; 7. Nomada lineola Pz. J ; 8. N. ruficornis Z. 

 5 and J; 9. N. succincta Pz. $ and J, skg. Friese (Mecklenburg), 7 bees 



I. Andrena apicata Sm.; 2. A. morawitzi Ths. j, not infreq., po-cltg., var. paveli 

 Mocs., rare (also in Hungary) ; 3. A. praecox Scop.; 4. A. albicrus K.; 

 5. A. nigroaenea K. ; 6. A. tibiaUs K. (also Fiume) ; 7. A. lucens Imh. Loew 

 (Berlin Botanic Garden), 2 bees i. Andrena albicans Miill. J, skg.; and 2. Apis 

 mellifica Z. 5, do. ; on S. cinerea Z. x S. purpurea Z. (j), S. cinerea Z. x S. nigricans 

 Sm. (5), and S. Caprea Z. x S. silesiaca Wtlld. (J), the honey-bee ; on S. aurita 

 Z. X S. purpurea Z., the honey-bee Bombus terrester Z. 5, skg. 



2579. S. alba L. 



Visitors. Alfken observed the following on S. alba, S. fragilis, and other sp. 

 at Bremen. 



A. Diptera. {a) Bibiomdae : i. BibiomarciZ. {b) Bombylitdae: 2. Bombylius 

 major Z. {c) Conopidae : 3. Myopa buccata Z. ; 4. M. polystigma Rond. ; 5. M. 

 testacea Z. (<f) Muscidae : 6. Gonia fasciata Mg. ; 7. G. ornata Mg. ; 8. Musca 

 domesticaZ. ; 9. PoUenia rudis Z*. ; 10. Scatophaga stercoraria Z. {e) Syrphidcu: 



II. Brachypalpus valgus Pz.; 12. Cheilosia flavicornis F.; 13. C. praecox Zeii.; 

 14. Eristalis intricarius Z.; 15. E. sepulcralis Z. ; 16. Platycheirus albimanus i?^. ; 

 17. Syrphus pyastri Z. B. Hymenoptera. (<z) Apidae: 18. Andrena albicans 

 iI/7/. 5 and J ; 19. A. albicrus K. 5 and t ; 20. A. apicata Sm. 5 and S; 21. A. 

 argentata S?n. 5 and J ; 22. A. carbonaria Z. 5 and J ; 23. A. chrysosceles K. 5 and t ; 

 24. A. cineraria Z. 5 and S ; 25. A. clarkella K. 5 and 4; 26. A. convexiuscula JS'. 

 5 and J ; 27. A. eximia Sm. 5 and S ; 28. A. extricata Sm. 5 and J; 29. A. flavipes 

 Pz. 5 and $ ; 30. A. gwynana^. $ and J ; 31. A. lapponica Zf//. J ; 32. A. morawitzi 



J 



