SAXIFRAGEAE 415 



Alfken (A.) and Leege (L.) record the following for Juist. — 

 A. Coleoptera. Telephoridae: i. Cantharis fulva3'c(?/.,freq. (A.,L.). B. Diptera. 

 (a) Dolichopodidae : 2. Dolichopus plumipes Scop. (L.). (b) Miiscidae: 3. Cynomyia 

 mortuorum L. (A.); 4. Lucilia caesarZ. (A.); 5. Spilogaster quadrum /"., freq. (A.); 

 6. S. sp. (A.), (f) Stratiomyidae: 7. Nemotelus notatus Zett., freq., po-dvg. and skg. 

 (A.); 8. Odontomyia viridula F., one (A.). {</) Syrphidae: 9. Eristalis arbustorum 

 Z. (A.); 10. Melithreptus strigatus Staeg. 5 and S, freq. (A.); 11. Platycheirus sp. 

 (A.); 12. Syrphus balteatus Deg., freq. (A.); 13. S. trilineatus Z., rare (A.). 

 C. Hymenoptera. (a) Formicidae -. 14. Lasius niger Z. (A.), (b) Ic/meumonidae : 

 15. Glypta fronticornis Gr. (L.); 16. Lissonota commixta A^^r. (L.). (f) Scoliidae: 

 17. Tiphia femorata F. 5, one (A.). D. Lepidoptera. (a) Salyridae: 18. Hip- 

 parchia semele Z., very common, skg. (A.), {b) Nocluidae: 19. Plusia gamma Z., 

 freq., skg. 



Verhoeff saw the following in Norderney. — 



A. Coleoptera. NitiduUdae -. 1. Meligethes aeneus Z., one. B. Diptera. 



Bibmiidae: 2. Dilophus vulgaris Mg., very common. 



Lindman observed numerous flies, a beetle, and a Lepidopterid on the Dovrefjeld. 

 Herm. Miiller saw 43 species of flies, 2 beetles, 8 Hymenoptera, and 6 Lepidoptera 

 in the Alps. MacLeod noticed an Ichneumonid, a Lepidopterid, a hover-fly, and 7 

 Muscids in the Pyrenees (Bot. Jaarb. Dodonaea, Ghent, iii, 1891, pp. 424-5). 

 Delpino saw a hover-fly, Helophilus floreus Z., at Florence. 



Burkill observed the following on the East coast of Scotland (' Fls. and Insects in 

 Gt. Britain,' Part I). — 



A. Coleoptera. NitiduUdae: I. Meligethes picipes 6"/«rOT., skg. B. Diptera. 

 (a) Bibionidae : 2. Scatopse brevicornis iT/^. {b) Miiscidae : 3. Anthomyiabrevicornis 

 Zell., po-dvg, ; 4. A. radicum Z., freq., skg. ; 5. Calliphora erythrocephala Mg., skg. ; 

 6. Coelopa sp., po-dvg.; 7. Hydrellia griseola Fall.; 8. Phytomyza sp. ; 9. Sarco- 

 phaga sp. ; 10. Sepsis cynipsea Z. (c) Phoridae: 11. Phora sp. (d) Syrphidae: 

 12. Eristalis tenax Z.; 13. Helophilus pendulus Z., skg. ; 14. Melanostoma mellina 

 Z. ; 15. Platycheirus albimanus Z". ; 16. Sphaerophoria scripta Z., skg. (e) Myceto- 

 philidae: 17. Sciara sp. C. Hemiptera. 18. One sp. D. Hymenoptera. (a) 

 Formicidae: 19. Formica fusca Z., skg.; 20. Myrmica rubra Z., skg. (b) Ichneii- 

 monidae: 21. 3 species. 



275. Philadelphus L. 



Large, white, very fragrant flowers ; with half-concealed nectar, secreted by 

 a disk on the inferior ovary. 



982. P. coronarius L. (Sprengel, 'Entd. Geh.,' p. 267; Herm. Miiller, 

 ' Fertilisation,' pp. 248-9, ' Weit. Beob.,' II, pp. 237-8 ; Warnstorf, Verh. bot. Ver., 

 Berlin, xxxviii, 1896; Knuth, 'Blumenbiol. Beob. a. d. Ins. Riigen.') — In this 

 species, according to Hermann Miiller, the stigmas are mature when the flower 

 opens, so that crossing is necessarily effected by insect visitors which have previously 

 been dusted with pollen. After a time the anthers dehisce, those of the outer 

 stamens doing so first. As the numerous anthers are very close to the stigmas, 

 which are situated in the line of fall of the pollen, automatic self-pollination readily 

 takes place should insect-visits fail. If a flower is not visited till the anthers have 

 dehisced, self- and cross-pollination are both possible. Warnstorf describes the 

 normal pollen-grains as yellow, eUipsoidal, closely tuberculated, about 25 /x long 

 and 12-13 fx. broad. They are mixed with much smaller, apparently abortive grains. 



