LEGUMINOSAE 281 



The flowers are yellow and about 6 mm. long ; the vexillum is streaked, the carina 

 is about 4 mm. long, and the alae somewhat shorter. 



674. M. hispida Gaertn. The flowers of this species, which is indigenous 

 to South Europe, are about as long again as those of M. lupulina, according to 

 Kirchner (' Flora v. Stuttgart,' p. 483). Their mechanism is similar. 



675. M. carstiensis Jacq. 



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

 1. Bombus rajellus K. 5, skg. ; 2. Cilissa tricincta K. 5, skg. legitimately and 



po-cltg., & skg.; 3. Megachile centuncularis Z. J, skg.; 4. M. circumcincta K. 5, 



po-cltg. ; 5. M. lagopodaZ. 5, do. 



203. Dorycnium L. 



676. D. hirsutum Ser. (=Bonjeania hirsuta Reichb.). In the flowers of this 

 species there is a pumping arrangement, the ends of the filaments being thickened 

 (Delpino, ' Ult. oss./ p. 45). 



Visitors. Schletterer observed the following at Pola. 



Hymenoptera. (a) Apidae: 1. Andrena convexiuscula K, var. fuscata K.; 

 2. A. morio BrulL; 3. Bombus argillaceus Scop. ; 4. B. terresterZ. ; 5. Eucera hispana 

 Lep. ; 6. E. interrupta Baer ; 7. Megachile muraria Z. ; 8. Podalirius retusus Z., 

 var. meridionalis Per. (b) Sphegidae : 9. Cerceris specularis Costa. 



677. D. herbaceum Vill. 



Visitors. Schletterer observed the following at Pola. 



Hymenoptera. (a) Apidae : 1. Anthidium strigatum Ltr. ; 2. Andrena dubitata 

 Schenck; 3. A. limbata Ev.; 4. A. morio BrulL; 5. Coelioxys aurolimbata Fo'rst.; 

 6. Colletes lacunatus Dours. ; 7. Eucera alternans ZVa//. ; 8. E. clypeata Zr. ; 9. E. in- 

 terrupta Baer. ; 10. E. ruficollis BrulL ; 1 1. Halictus calceatus Scop., var. obovatus K. ; 

 12. H. maculatus Sm., one S; 13. H. morbillosus Kriecht.', 14. H. quadricinctus F. ; 

 15. H. scabiosae Rossi; 16. H. villosulus K. ; 17. Nomada nobilis H. Sch.; 

 18. N. ochrostoma K. ; 19. Nomia diversipes Ltr. ; 20. Osmia andrenoides Spin. ; 

 21. O. crenulata Mor.; 22. Prosopis clypearis Schenck; 23. P. variegata F. ; 

 24. Sphecodes gibbus Z. ; 25. S. subquadratus Sm. ; 26. Xylocopa cyanescens 

 BrulL, one 5. (5) Braconidae: 27. Bracon terrefactor Vill. (c) Chalcididae'. 

 28. Leucaspis dorsigera F ; 29. L. gigas F. ; 30. L. intermedia ///. (d) Evaniidae : 

 31. Gasteruption pedemontanus Tourn.; 32. G. rubicans Gne'r.; 33. G. tibiale 

 Schletl. (e) Pompiliidae: 34. Agenia erythropus Kohl. ; 35. Pompilus quadripunc- 

 tatusZ'. ; 36. Pseudagenia carbonaria Scop. (/) Scoliidae: 37. Myzine tripunctata 

 Rossi; 38. Scolia hirta Schr.; 39. S. insubrica Scop.; 40. S. quadripunctata F. ; 

 41. Tiphia minuta v. d. L. (g) Sphegidae: 42. Cerceris arenaria Z. ; 43. C. bupre- 

 sticida Z/C ; 44. C. emarginata Pz. ; 45. C. ferreri v. d. L. ; 46. C. labiata F. ; 47. C. 

 leucozonica Schlett. ; 48. C. quadrimaculata Duf.; 49. C. rybiensis Z. ; 50. C. specu- 

 laris Costa; 51. Gorytes quinquecinctus F. ; 52. Oxybelus melancholicus Chevr.; 

 53. Tachytes europaeus Kohl. ; 54. T. obsoletus Rossi, (h) Tenthredinidae : 55. 

 Cyphona furcata Vill., var. melanocephala Pz. (i) Vespidae : 56. Eumenes pomiformis 

 F. ; 57. Polistes gallica Z. 



204. Indigofera L. 



(Hildebrand, Bot. Ztg, Leipzig, xxiv, 1866, pp. 74-5.) 



Flowers with explosive mechanism. Carina and alae fold downwards when 

 the tension is released, so that the column of stamens and pistil remains horizontal. 

 Automatic self-pollination is possible when the flowers fade. 



