682 ANGIOSPERMAEDICOTYLEDONES 



threptus scriptus Z.; 6. Syrphus balteatus Beg. C. Hymenoptera. Apidae: 

 7. Andrena nana K. 5, po-cltg. ; 8. Diphysis serratulae Pz. 5, do.; 9. Halictus 

 cylindricus F. 5, do. ; 10. H. leucozonius Schr. 5, do. D. Lepidoptera. Rhopa- 

 locera: 1 1. Vanessa urticae Z., skg. Also in Silesia (S.), especially at Glatz (G.) 

 (op. cit., p. 50). A. Diptera. (a) Bibionidae : 1. Bibio pomonae F. (S.). 

 (b) Syrphidae: 2. Cheilosia variabilis Pz. (S.). B. Hymenoptera. Apidae: 



3. Andrena convexiuscula K. 5, po-cltg. (S.); 4. A. fulvescens Sm. 5, do. (S.); 

 5. Dufourea vulgaris Schenck 5 and J skg., 5 also po-cltg. (G.) ; 6. Halictus flavipes 

 F. 5, po-cltg. (S.); 7. H. malachurus K. $ (S.); 8. H. punctulatus K. $ (S.); 

 9. H. smeathmanellus ./T. 5 (S.); 10. H. xanthopus K. 5, po-cltg. (S.); 11. Panurgus 

 banksianus K. $ and <$, skg., po-cltg. (S.) ; 12. Prosopis sp. (S.). 



The following were recorded by the observers, and for the localities stated. 



A. Diptera. (a) Muscidae : 1. Onesia fioralis R.-D. (d) Syrphidae : 2. Chryso- 

 gaster sp., occasional ; 3. Platycheirus albimanus F. 5 ; 4. Syrphus corollae F. y and S. 

 B. Hymenoptera. Apidae : 5. Bombus lapidarius Z. 5 and $, freq., skg. Alfken 

 (Juist), the humble-bee Bombus muscorum F. . Krieger (Leipzig), the bees Halictus 

 rubicundus Chr. and Panurgus banksianus K. Herm. Miiller (Alps), 4 bees, 2 hover- 

 flies, and a beetle. MacLeod (Flanders), 9 short-tongued bees (among them 2 species 

 of Panurgus), 8 hover-flies, 4 Muscids, and 3 Lepidoptera (Bot. Jaarb. Dodonaea, 

 Ghent, v, 1893, PP- 43 0-1 ) : (Pyrenees), 7 bees (among them 2 species of Panurgus), 

 5 beetles, 5 Lepidoptera, and n flies (op. cit., iii, 1891, pp. 364-5). Scott-Elliot 

 (Dumfriesshire), 2 Muscids ('Flora of Dumfriesshire,' p. 103). 



1627. H glabra L. (Herm. Miiller, ' Fertilisation,' p. 356.) 



Visitors. The following were recorded by the observers, and for the localities 



stated. 



Herm. Miiller (Westphalia), 5 bees 1. Andrena fulvescens Sm. 5, po-cltg.; 



2. Dufourea vulgaris Schenck 5, po-cltg. and skg.; 3. Halictus cylindricus F. 5, po-cltg. ; 



4. H. nitidiusculus K. 5 (Borgstette, Tecklenburg) ; 5. Sphecodes gibbus Z. $ and 

 J, skg. and covering itself with pollen. H. de Vries (Netherlands), the humble-bee 

 Bombus subterraneus Z. 5 (Ned. Kruidk. Arch., Nijmegen, 2. Ser., 2. Deel, 1875). 



496. Achyrophorus Adans. 

 As Hypochoeris. 



1628. A. maculatus Scop. (= Hypochoeris maculata Z.). Linnaeus says 

 that the heads of this species open at 6 a.m. at Upsala, and close betwee 

 4 and 5 p.m. ; according to Kerner, they open between 7 and 8 a.m. at 

 Innsbruck, closing again about 6 or 7 p.m. 



Visitors. Loew (Berlin Botanic Garden) observed the bee Osmia fulviventris 

 Pz. $, po-cltg. 



1629. A. uniflorus F. W. Schmidt (= Hypochoeris helvetica Wul/., and 

 Hypochoeris unifiora Vill.). In this species, according to Hermann Miiller 

 (' Alpenblumen,' p. 468), the stylar branches bend gradually so far outwards 

 and backwards that the stigmatic papillae on their inner surfaces come into 

 contact with any pollen that may have remained among the sweeping-hairs, so 

 that in the absence of insect visitors automatic self-pollination may be effected. 



Visitors. The following were recorded by the observers, and for the localities 

 stated. 



