222 



ANGI0SPERMAED1C0TYLED0NES 



Von Fricken saw the small beetle Trachys nana Hbst., very infrequent, in 

 Westphalia. Von Dalla Torre and Schletterer record the cuckoo-bee Nomada 

 guttulata Schenck $ for the Tyrol. 



Herm. Muller saw 2 Hymenoptera in the Alps, and MacLeod noticed 2 Hymeno- 

 ptera, a Bombylius, and a Muscid in the Pyrenees (Bot Jaarb. Dodonaea, Ghent, iii, 

 1891, p. 402). 



In Dumfriesshire, Apis, a humble-bee, 2 short-tongued bees, and several Diptera 

 have been recorded (Scott-Elliot, 'Flora of Dumfriesshire,' p. 37). 



Loew observed the following in the Berlin Botanic Garden. 



A. Diptera. Syrphidae: 1. Helophilus pendulus Z. B. Hymenoptera. (a) 

 Apidae : 2. Halictus cylindricus F. $, skg. (Z>) Sphegidae : 3. Cerceris variabilis Schr. 

 5 ; 4. Oxybelus sericatus Gerst. 5. 



562. G. pyrenaicum. (Herm. Muller, 'Fertilisation,' p. 151, ' Alpenblumen,' 

 pp. 173-4; Schulz, 'Beitrage,' II, p. 185; Knuth, ' Bloemenbiol. Bijdragen.') For 

 Central Germany, Hermann Muller describes the flowers of this species as agreeing 

 with those of G. sanguineum. . A. Schulz states that the female flowers are distributed 

 gynodioeciously, or much more rarely gynomonoeciously. 



Fig. 67. Geranium pyrenaicum, L. (after Herm. Muller). (i) Stamens and pistil before the beginning 

 of the first stage : all the anthers are still immature, and the undeveloped stigmas are in the middle 

 of them. (2) The same in the first half of the first (male) stage : the outer stamens are erect, and their 

 anthers are covered with pollen. (3) The same in the second part of the same stage. (4) The same in 

 the second (hermaphrodite) stage : all the anthers are covered with pollen, and the stigmas are spread out. 

 a 1 and a", anthers of the outer and inner stamens ; si, stigmas ; n, nectaries. 



In the Alps, Herm. Muller (' Alpenblumen,' pp. 173-4) observed a variety with 

 lilac petals, which spread out into a flat surface, and with stamens curving strongly 

 outwards before dehiscence. The styles do not diverge till later on, so that automatic 

 self-pollination is impossible. 



Visitors. Herm. Muller observed 5 bees, nect-skg., 2 Syrphids, skg., and a 

 Lepidopterid upon this Alpine form. I only saw the honey-bee in Schleswig- 

 Holstein. Borgstette noticed the following mostly bees and flies in Central 

 Germany. 



A. Coleoptera. (a) Cistelidae: 1. Cistela murina L. (b) Dermestidae : 2. 

 Byturus fumatus Z. (c) Telephoridae : 3. Malachius aeneus Z. B. Diptera. {a) 

 Muscidae: 4. Echinomyia fera Z. ; 5. Scatophaga stercoraria Z. {&) Syrphidae: 



