RESEDACEAE 129 



A. Coleoptera. Anthribidae : 1. Urodon conformis Suffr. (Budd.); 2. U. 

 rafipes Oliv. (Budd.). B. Hymenoptera. 3. Apidae : Andrena nigroaenea K. 5, 

 in large numbers, skg. (H. M., Thuringia) ; 4. Apis mellifica Z. 5, skg. and po-cltg. 

 (H. M.); 5. Prosopis bipunctata F. 5 (Budd.); 6. P. communis Nyl. j and S, very 

 freq. (H.M.); 7. P. hyalinata Sm. S and 5, freq., skg. and po-cltg. (H. M.). 



323. R. lutea L. (Harm. Muller, 'Fertilisation,' p. 116, 'Weit. Beob.,' II, 

 p. 205; MacLeod, Bot. Jaarb. Dodonaea, Ghent, vi, 1894, p. 213 ; Wamstorf, Verb, 

 bot. Ver., Berlin, xxxviii, 1896; Kirchner, 'Flora v. Stuttgart,' p. 315; Schulz, 

 ' Beitrage,' I, p. 4.) — The odourless flowers are bright greenish-yellow, and either 

 homogamous (Kirchner) or slightly protandrous (Schulz). The stamens are at first 

 curved over the pistil. When the secretion of nectar begins some of the anthers 

 dehisce, and their filaments bend up towards the disk. Kirchner says that the 

 stigmatic papillae mature at this stage, but Schulz asserts that they do not do so 

 till all but the innermost anthers have shed their pollen. Failing insect-visits, auto- 

 matic self-pollination takes place, for the anthers dehisce above the stigma. Autogamy, 

 however, has little or no result (Darwin, Focke). Besides hermaphrodite flowers, 

 Schulz observed here and there andromonoecious ones with undeveloped stigmas. 

 Wamstorf describes the pollen-grains as pale yellowish in colour, ellipsoidal, finely 

 tuberculated, about 44 ft. long and 19 /* broad. 



Visitors. — Hermann Muller observed the following in Thuringia. — 



A. Coleoptera. (a) Anthribidae : i. Urodon rufipes Oliv., vainly searching for 

 nectar, (b) Curculionidae: 2. Baris abrotani Gfrw., do. (c) Mordellidae: 3. Anaspis 

 rufilabris Gyll. B. Diptera. Muscidae: 4. Ulidia erythrophthalma Mg., do. 

 C. Hymenoptera. (a) Apidae : 5. Apis mellifica Z. 5, skg. and po-cltg. ; 6. Halictus 

 sp. $, skg. ; 7. Prosopis pictipes N}'i. 5, skg. ; 8. Pr. signata Fz. 5 and S, very freq., 

 skg. (3) Formicidae: 9. Lasius niger Z. 5, do. (c) Ichneumonidae : 10. Undetermined 

 sp., do. (d) Sphegidae: 11. Cerceris arenaria Z., skg. ; 12. C. labiata Z"., freq., skg.; 

 13. C. rybiensis Z., very freq., skg.; 14. Crabro (Entomognathus) brevis Z. 5 and t>, 

 skg.; 15. Diodontus tristis Z. 5, occasional, (f) Vespidae: 16. Odynerus parietum 

 Z. i, skg. 



Loew noticed Prosopis sp. in Steiermark (' Beitrage,' p. 51). The following bees 

 were seen by von Dalla Torre in the Tyrol: — i. Halictus quadricinctus Fbr. 5; 

 2. H. sexnotatus K. 5. MacLeod observed 7 short-tongued Hymenoptera, a Lepi- 

 dopterid, 2 Syrphids, and a Muscid, in the Pyrenees (' Pyreneenbl.,' p. 396). Smith 

 records Prosopis bipunctata F. (=P. signata Pz.) for England. 



The following were observed by Schletterer at Pola in the Tyrol. — 



Hymenoptera. [a) Apidae: i. Anthidium diadema Z/r. ; 2. A. oblongatum 

 Z/r. ; 3. Andrena albopunctata Rossi; 4. A. convexiuscula K.; 5. A. convexiuscula 

 K. v. fuscata.ff'. ; 6. A. flessaeZ'2. ; 7. A. labialis .ff". ; 8. A. mono Rrull.; 9. A. 

 parvula.^. ; 10. A. thoracica Z". ; 11. Ceratina cucurbitina i?owz'; 12. CoUetes lacu- 

 nsLtus Dours ; 13. C. niveofasciatus Z'cwrj; 14. Eucera longicornis Z. ; 15. Halictus 

 calceatus &■()/). ; 1 6. H. interruptus /"z. ; 17. H. quadricinctus Z'. ; 18. H. sexnotatus 

 AT. ; 19. Nomada nobilis If. ScA. ; 20. Nomia diversipes La/r. ; 21. Prosopis clypearis 

 Schenck. (fi) Ichneumonidae: 22. Pristomerus vulnerator Pz. (c) Pompilidae: 23. 

 Pseudagenia albifrons Z'a/TO. ; 24. Salius notatus lep. (d) Sphegidae: 25. Cerceris 

 arenariaZ.; 26. C. emarginata/'z. ; 27. C. quadrifasciata/'z.; 28. C. specularis Cw/a; 

 29. Crabro clypeatus Z. (e) Tenlhredinidae: 30. AUantus fasciatus 3'fCi/i. {/) Vespidae: 

 31. Eumenes pomiformis Pz. ; 32. Odynerus parietum Z.; 33. Polistes gallica Z. 



