274 ANGIOSPERMAE—DICOTYLEDONES 



style protrude, returning again to the cavity of the carina if the pressure is not 

 too strong. But if this is considerable they remain entirely or partially projecting 

 out of the carina. 



Visitors. — These are bees, especially Dasygastres, of which Harm. Miiller 

 observed the following in Westphalia. — 



I. Anthidium manicatum L, j and S, freq. ; 2. A. punctatum Ltr. j and S; 



3. Megachile circumcincta K. 5, freq.; 4. M. lagopoda L. 5 and S, do.; 5. M. 

 versicolor Sni. 5; 6. Osmia aenea L. 5, freq.; and in Thuringia, 7. O. aurulenta 

 Pz. 5, do. 



Herm. Miiller also saw the following Scopulipedes in Westphalia. — 



I. Apis mellifica Z. 5 ; 2. Bombus lapidarius Z. 5 ; 3- B. terrester Z. 5 ; 4. Cilissa 

 leporina Pz. } ; and in Thuringia, 5. Podalirius vulpinus Pz. 5 and S, freq. 



In Schleswig-Holstein I noticed only the Scopulipedes Apis, Bombus terrester, 

 and B. lapidarius, while Loew saw the dasygastrid Megachile maritima K. 5, po-cltg., 

 in North Germany. In the Berlin Botanic Garden he also observed Anthidium 

 manicatum Z. 5, po-cltg., and also skg. persistently in spite of the absence of nectar ; 

 when the 5 was caught a S immediately visited the same flower, obstinately returning 

 after being driven away. 



The following have been recorded by the naturalists and at the places 

 mentioned. — 



Alfken (Bremen), the bees, i. Andrena flavipes Pz. 5, 2nd generation ; 2. Bombus 

 arenicola TTis. 5 ; 3. B. distinguendus Mor. 5 ; 4. Megachile maritima K. 5 ; all po-cltg. 

 Sickmann (Osnabriick), the fossorial wasp Astata minor Kohl. Alfken (Juist), the 

 bees, I. Bombus lapidarius Z. 5; 2. B. muscorum F- ^', 3- B. terrester Z. §; 



4. Megachile maritima JC. 5 and S. Rossler (Wiesbaden), the following Lepidoptera 

 as unbidden guests — i. Grapholitha microgammana G«.; 2. Acidalia humiliata Z^2f/«.; 

 3. Hesperia actaeon Roll. ; 4. Lycaena argus Z. MacLeod (Flanders), Apis, 4 humble- 

 bees, and a Lepidopterid (Bot. Jaarb. Dodonaea, Ghent, vi, 1894, pp. 335-6). 



663. O. repens L. (=0. procurrens Wallr.). (Herm. Miiller, ' Weit. Beob.,' 

 II, p. 254; Kirchner, 'Flora v. Stuttgart,' p. 479; Knuth, ' Bloemenbiol. Bijdragen'; 

 Warnstorf, Verb. bot. Ver., Berlin, xxxviii, 1896.) — The flower mechanism agrees 

 with that of the last species, except that the blossoms are rather larger (Kirchner). 

 Warnstorf states that the downwardly directed pointed alar process is longer and 

 sharper than in O. spinosa. The pollen-grains are golden yellow in colour, of 

 broad or narrow ellipsoidal shape, about 37 /x long and 25 /j. broad. 



Visitors. — These are the following bees, po-cltg., or vainly skg. — 



A, Dasygastres. i . Anthidium manicatum Z. 5 and S (Buddeberg, Nassau) ; 

 2. A. oblongatum Ltr. (do.); 3. Megachile argentata F. (do.); 4. M. circumcincta 

 K. $ (do.) ; 5. M. fasciata Sm. S, skg. (do.) ; 6. Osmia spinulosa K. 5 (Herm. Miiller, 

 Thuringia). B. Scopulipedes. 7. Bombus agrorum Z'. (Knuth, Holstein); 8. B. 

 variabilis Schmiedekn., var. tristis Seidl. (Herm. Miiller, Thuringia) ; 9. Cilissa leporina 

 Pz. 5, skg. (Buddeberg, Nassau). 



I saw the honey-bee, skg., in Riigen. 



H. de Vries observed the humble-bee Bombus terrester Z. 5 in the Netherlands 

 (Ned. Kruidk. Arch., Nijmegen, 2. ser., 2. deel, 1875). 



664. O. arvensis L. (Syst. Nat.) — Kirchner describes the mechanism as 

 agreeing with those of the last two species, though the flowers are often smaller. 



