LEGUMINOSAE 



283 



claviventris Thorns. 5, skg. (b) Sphegidae : 8. Oxybelus furcatus Lep., skg. B. Diptera. 

 Empidae : 9. Empis sp. 



Schletterer records the following for Pola. 



Hymenoptera. [a) Apidae: 1. Anthidium strigatum Ltr. ; 2. Andrena con- 

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

 Brull.; 7. A. nana JST.; 8. A. thoracica F. ; 9. Halictus calceatus Scop.; 10. EL 

 morbillosus Krchb. ; 1 1. H. patellatus Mor. ; 1 2. H. sexcinctus F. ; 13. H. tetrazonius 

 Klg. ; 14. Nomia diversipes Ltr. (b) Tenthredinidae : 15. Amasis laeta F. ; 16. Cephus 

 haemorrhoidalis F.; 17. C. pygmaeus L. (c) Vespidae: 18. Polistes gallica L. 



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: 1. Empis sp. B. 

 Hymenoptera. (a) Api- 

 dae: 2. Andrena pilipes 

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

 dium strigatum Ltr. $>, 

 do. ; 4. Coelioxys conica 

 L. S, skg. ; 5. C. elongata 

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

 dentata Lep. J, do. ; 7. 

 Halictus rubicundus Chr. 

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

 viventris Thorns, t, skg. 

 (b) Sphegidae: 9. Oxybelus 

 furcatus Lep., skg. 



Schletterer and Dalla 

 Torre record the following 

 bees for the Tyrol. 



1. Bombus hortorum 

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



FIG. 91. Melilotus officinalis, Willd. (after Herm. Muller). (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; e, depressed parts of the alae, the inner surfaces of 

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

 fusion of superficial cells ; f, finger-like processes of the superior basal angles 

 of the alae ; g, column of stamens and pistil ; h, nectar-passage ; gr, style ; 

 n, stigma. 



682. M. alba Desr. ( = M. vulgaris Willd.). (Herm. Muller, '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. officinalis. 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 Warnemunde. 



