384 ANGIOSPERMAEDICOTYLEDONES 



97. Cerceris arenaria L., not infreq. ; 98. Crabro lapidarius Pz. $, skg.; 99. Oxybelus 

 bellus Dahlb., very freq., skg.; 100. O. uniglumis Z., do.; 101. Passaloecus insignis 

 Shuck. $>, skg. ; 102. Psen atratus Pz., do. (g) Pompilidae: 103. Pompilus minutus 

 Da Aid., skg. (h) Tenthredinidae : 104. Allantus temulus Scop., nect-lkg. (i) Vespidae: 

 105. Odynerus spinipes L. D. Lepidoptera. 106. Adela croessella Scop., freq., 

 skg.; 107. Dichrorampha plumbagana Tr. E. Neuroptera. 108. Agrion settled 

 on the flowers not infrequently, apparently only to sun itself; 109. Panorpa co: 

 munis Z., nect-lkg. F. Orthoptera. no. Ectobia lapponica Z., nect-lkg.(?). 



Loew observed the following on S. salicifolia in Silesia (' Beitrage,' p. 30). 



A. Coleoptera. (a) Malacodermaia : 1. Dasytes flavipes F., nect-lkg. (b) Nil 

 dulidae: 2. Meligethes sp. B. Hymenoptera. Vespidae: 3. Odynerus sinuatus 

 F. ?, skg. 



Schenck noticed the bee Andrena gwynana K. in Nassau. 



H. de Vries records a bee (Apis mellifica Z. 5) and a humble-bee (Bombus 

 terrester Z. S) for the Netherlands (Ned. Kruidk. Arch., Nijmegen, 2. ser., 2. deel, 

 i875)- 



919. S. opulifolia L. F. Ludwig expresses the opinion (Kosmos, Stuttgart, 

 xvii, 1885, p. 203) that the red colour assumed by the ovary in this species after the 

 flower has faded serves to keep away unbidden guests from blossoms that are 

 still fresh and retain their original hue. 



Visitors. Alfken observed 2 bees (Prosopis communis Nyl. $, and Andrena 

 albicans Mull. 5) at Bremen ; and F. F. Kohl saw a wasp (Odynerus oviventris 

 Wesm.) in the Tyrol. 



920. S. digitata Willd. 



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

 A. Coleoptera. Scarabaeidae : 1 . Cetonia aurata Z., freq., dvg. the flowers ; 

 2. Phyllopertha hordeola Z., do. B. Diptera. Syrphidae: 3. Eristalis nemorum L 

 po-dvg. C. Hymenoptera. Apidae : 4. Apis mellifica Z. 5, po-cltg. 



led 



I 



259. Aruncus L, 



Yellowish-white dioecious pollen flowers, devoid of nectar, and aggregated into 

 large inflorescences. 



921. A. sylvestris Kostel. ( = Spiraea Aruncus Z.). (Herm. Miiller, 'Fertilisa- 

 tion,' p. 224.) The flowers of this species are polygamous-dioecious. Kerner 

 says : ' It produces true hermaphrodite flowers and pseudo-hermaphrodite male and 

 female flowers. The three kinds of flowers are arranged thus: (1) some plants 

 bear only pseudo-hermaphrodite female flowers, (2) others only pseudo-hermaphrodite 

 male flowers, (3) some bear both hermaphrodite flowers and pseudo-hermaphrodite 

 male flowers, and (4) in addition there are yet other plants whose flowers are all 

 hermaphrodite ' (' Nat. Hist. PL,' Eng. Ed. 1, II, p. 300). 



Visitors. Herm. Miiller (loc. cit., and ' Weit. Beob.,' II, p. 243) gives the 

 following list. 



A. Coleoptera. (a) Dermestidae: 1. Anthrenus claviger ZV., occasional ; 2. A. 

 muscorum Z. ; 3. A. pimpinellae F., very freq.; 4. A. scrophulariae Z., not infreq.; 

 5. Attagenus schaefferi Hbst. (6) Nitidulidae : 6. Meligethes freq. B. Diptera. 

 (a) Muscidae: 7. Sp. of Anthomyia, po-dvg. (b) Syrphidae: 8. Syritta pipiens / , 

 very freq., po-dvg. C. Hymenoptera. {a) Apidae: 9. Prosopis armillata Nyl ; 





