LEGUMINOSAE 



283 



(b) Sphegidae : 8. Oxybelus furcatus Lep., skg. B. Diptera. 



daviventris Thorns. S, skg. 

 Empidae : 9. Empis sp. 



Schletterer records the following for Pola. — 



Hymenoptera. (a) Apidae: i. Anthidium strigatum Z/r. ; 2. Andrena con- 

 vexiuscula K. ; 3. A. flessae Pz. ; 4. A. limbata Ev. ; 5. A. lucens Imh. ; 6. A. morio 

 BrulL; 7. A. nana K.; 8. A. thoracica F.; 9. Halictus calceatus Scop.; 10. H. 

 morbillosus Krchh. ; 11. H. patellatus Mor. ; 12. H. sexcinctus F.; 13. H. tetrazonius 

 Klg.\ 14. Nomiadiversipes Z/r. {b) Tenthredinidae : 15. Amasis laeta/". ; 16. Cephus 

 haemorrhoidalis F.; i-j. C. pygmaeus Z. (c) Vespidae: 18. Polistes gallica Z. 



Schulz saw bees perforating the flowers. 



681. M. officinalis Desr. ( = M. arvensis Wallr.). (Knuth, ' Bloemenbiol. 

 Bijdragen.') — The golden-yellow flowers of this species also smell like cumarin, and 

 possess the same mechanism as those of M. altissima. 



Visitors. — I have seen 

 the honey-bee. 



Loew observed the 

 following in Mecklenburg 

 ('Beitrage,' p. 45) — 



A. Diptera. Empi- 

 dae: I. Empis sp. B. 

 Hymenoptera. (a) Api- 

 dae: 2. Andrena pilipes 

 F. 5, po-cltg.; 3. Anthi- 

 dium strigatum Ltr. j, 

 do. ; 4. Coelioxys conica 

 Z. J, skg. ; 5. C. elongata 

 Lep. }, do. ; 6. C. octo- 

 dentata Lep. 5, do. ; 7. 

 Halictus rubicundus Chr. 

 5, po-cltg. ; 8. Osmia da- 

 viventris Thorns. 5, skg. 

 (3) Sphegidae: 9. Oxybelus 

 furcatus Lep., skg. 



Schletterer and Dalla 

 Torre record the following 

 bees for the Tyrol. — 



I. Bombus hortorum 

 Z. ; 2. B. mastrucatus Gerst. ; 3. Ceratina cyanea K. 



682. M. alba Desr. ( = M. vulgaris Wiild.). (Harm. Miiller, 'Fertilisation,' 

 p. 181, 'Weit. Beob.,' II, p. 252; Loew, 'Bliitenbiol. Floristik,' p. 392; Kirchner, 

 ' Beitrage,' p. 40 ; Knuth, ' Bloemenbiol. Bijdragen.') — The white flowers of this 

 species, which also smell of cumarin, possess the same mechanism as those of 

 M. oflicinalis. The calyx is 2 mm. long; the blade of the oblique vexillum is 

 4 mm. in length; the carina and alae project for 2^ mm. from the calyx. The 

 anthers mature shortly before anthesis, and do not reach the level of the stigma. 



Visitors. — Besides the honey-bee (po-cltg. and nect-skg.) numerous other 

 insects have been observed. Loew saw the following at Warnemiinde. — 



Fig. 91. Metilotus qj^cinaUs^ WUld. (after Herm. MiiUer). (i) 

 Flower seen from the side. (2) The same, after removal of the vexillum 

 and calyx ; seen from above. (3) The same, after the alae and carina 

 have been pressed down ; seen from the side, a, anthers : d. pivot on which 

 the carina turns; tf, depressed parts of the aiae, the inner surfaces of 

 which are united with the outer surfaces of the two carinal petals, by the 

 fusion of superficial cells ; _/^ finger-like processes of the superior basal angles 

 of the alae ; ^, column of stamens and pistil ; /;, nectar-passage ; gr^ style; 

 K, stigma. 



