2IO ANGIOSPERMAE—DICOTYLEDONES 



Visitors. — Herm. Muller (H. M.) in Westphalia, and Buddeberg (Budd.) in 

 Nassau, observed the following Apidae. — 



I. Andrena schrankella Nyl. i, skg. (H. M.); 2. Apis mellifica Z. 5, very freq., 

 skg. (H. M.); 3. Chelostoma nigricorne Nyl. 6, skg. (H. M.); 4. Cilissa haemor- 

 rhoidalis F. t, do. (H. M., Budd.); 5. Halictus cylindricus F. $, do. (H. M.); 

 6. Rhophites canus Ev. 5, do. (Budd.). 



Friese saw Eucera malvae Rossi at Bozen. 



Loew noticed the following in the Berlin Botanic Garden. — 



A. Diptera. Syrphidae : i . Syrphus balteatus Deg., po-dvg. B. Hymeno- 

 ptera. Apidae: 2. Apis mellifica L. 5, po-cltg. C. Lepidoptera. Rhopalocera: 



3. Pieris brassicae L., skg. ; 4. Spilothyrus alceae Esp., do. 



521. M. moschata L. (Herm. Muller, 'Fertilisation,' p. 144.) — As No. 519. 

 Visitors. — Herm. Muller observed the following. — 



A. Diptera. Bombyliidae : i. Systoechus sulphureus j^/z/'aw., skg. B. Hymeno- 

 ptera. Apidae: 2. Andrena coitana K. S, skg.; 3. Apis mellifica L. 5, do.; 



4. Chelostoma nigricorne Z. 5, do. C. Lepidoptera. Rhopalocera: 5. Hesperia 

 sylvanus Esp., skg. 



MacLeod saw Bombus lapidarius L. ^ in the Pyrenees (Bot. Jaarb. Dodonaea, 

 Ghent, iii, 1891, p. 401). 



In Dumfriesshire, Apis and 2 humble-bees were recorded (Scott-Elliot, ' Flora of 

 Dumfriesshire,' p. 35). 



148. Lavatera L. 



Like the last genus. 



522. L. thuringiaca L. — The large pale rose-red flowers of this species are 

 protandrous, according to Schulz (' Beitrage,' I, p. 26). The anthers of the 70- 

 90 stamens often remain closed for a time after the flower opens. Dehiscence 

 begins above, and after it is over the filaments do not curve downwards. Before 

 the lower anthers have shed their pollen, the styles — which have so far been enclosed 

 in the tube formed by the filaments — elongate, and curve outwards until the 

 stigmatic branches touch the anthers. But the latter are usually destitute of pollen 

 at this stage, so that automatic self-pollination is unusual. 



Visitors. — Loew observed the honey-bee, po-cltg., in the Berhn Botanic 

 Garden. 



523. L. trimestris L. — 



Visitors. — Schenck observed the fossorial wasp Crabro serripes Pz. in Nassau. 



149. Kitaibelia Willd. 



524. K. vitifolia Willd.— 



Visitors. — Loew observed the hover-fly Syrphus balteatus Deg., po-dvg., in the 

 Berlin Botanic Garden. 



150. Althaea L. 



Like Malva. 



525. A. ficifolia Cav. — This species is self-sterile (Comes, ' Ult. stud, e 

 consideraz. sulla impollinaz. delle piante '). 



