382 ANGIOSPERMAE—DICOTYLEDONES 



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

 on 5 and S catkins, (i) Syrphidae: 14. Eristalis pertinax Scop., on S and $ 

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

 (a) Apidae: 16. Andrena clarkella K. S, on 5 catkins; 17. A. gwynana K. 5, 

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

 rum Z., do. S; 20. B. terrester Z., do., 5 freq., skg. and po-cltg. (3) Ichneu- 

 moiiidae : 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. 

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

 ' Beitrage,' p. 38), a Muscid (Conia capitata Deg^j 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. extricata 

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

 Mull.; 7. A. albicrus A!". ; 8. A. tibialis .^. ; 9. Bombus lapidarius Z., a $. Scott- 

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

 p. 157). Schenck (Nassau), 6 bees— i. Andrena apicata Sm. 5 ; 2. A. clarkella K. ; 

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

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

 var. paveli Macs. 



S. cinerea Z. (Wamstorf, 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 17 /x broad. 



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



Alfken (Bremen), 9 bees — i. Andrena apicata Sm. 5 and J ; 2. A. clarkella K. 

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

 jonellus K. 5 ; 6. B. terrester Z. j ; 7. Nomada lineola Pz. t> ; 8. N. ruScornis Z. 

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



I. Andrena apicata Sm.; 2. A. morawitzi Ths. 5, not infreq., po-cltg., var. paveli 

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

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

 (Berlin Botanic Garden), 2 bees — i. Andrena albicans Miill. S, 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 Willd. (S), the honey-bee ; on S. aurita 

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



2579. S. alba L. — 



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

 at Bremen. — 



A. Diptera. (a) Bibionidae -. i. Bibio marciZ. (U) Bombyliidae: 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. Pollenia rudis Z^. ; 10. Scatophaga stercoraria Z. {e) Syrphidae: 



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

 14. Eristalis intricarius Z. ; 15. E. sepulcralis L.\ 16. Platycheirus albimanus F.; 

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

 iJ/«7/. 5 and J ; 19. A. albicrus K. 5 and S ; 20. A. apicata 6'»z. 5 and S ; 21. A. 

 argentata ;5'ot. j and J ; 22. A. carbonaria Z. 5 and $ ; 23. A. chrysosceles K. 5 and J ; 

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

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

 /"s. 5 and $ ; 30. A. gwynana K. 5 and J ; 31. A. lapponica Zf//. S ; 32. A, morawitzi 



