EUPHORBIACEAE 369 



2532. E. nicaeensis Al. 



Visitors. Loew (Berlin Botanic Garden) observed the following. 



A. Diptera. {a) Muscidae : i. Anthomyia sp. {d) Syrphidae : 2. Eristalis 

 nemorum Z. B. Hymenoptera. Apidae : 3. Halictus nitidiusculus I^. $, skg. 

 and po-cltg. 



2533. E. salicifolia Host. 



Visitors. Loew (Berlin Botanic Garden) observed a Dermestid beetle (An- 

 threnus scrophulariae Z., nect-lkg.) and 2 hover-flies (Helophilus floreus Z., skg.^ 

 and Syritta pipiens Z.). 



2534. E. virgata Waldst. et Kit. 



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

 stated. 



F. F. Kohl (Innsbruck Botanic Garden), the Vespid Odynerus nigripes H.-Sch. 

 Plateau (Brussels Botanic Garden), the honey-bee, freq., a Muscid (Lacilia caesar Z.), 

 and hover-flies (Eristalis arbustorum Z., and other sp.). 



2535. E. amygdaloides L. 



Visitors. Bonnier saw the honey-bee, freq., skg. 



2536. E. segetalis L. The flowers of the species are greenish-yellow in 

 colom*. 



Visitors. Plateau observed a bee (Halictus sp.), a hover-fly (Syritta pipiens Z.), 

 Muscids, and Thrips. 



2537. E. dendroides L. (Knuth, 'Bliitenbiol. Beob. a. d. Ins. Capri,' 

 pp. 16-17-) 



Visitors. Knuth (Capri) observed the following. 



A. Coleoptera. i. Coccinella septempunctata Z. B. Diptera. {a) Mus- 

 cidae : 2. Sarcophaga carnaria Z. ; 3. Scatophaga stercoraria Z. (b) Syrphidae : 

 4. Eristalis tenax Z. ; 5. Syrphus sp. C. Hymenoptera. {a) Apidae : 6. Andrena 

 sp. {b) Formicidae : 7. Formica sp. 



2538. E. ceratocarpa Tenore; 2539. E. officinarum L. ; and 2540. E. 

 splendens Boj. -Nicotra states that these species are dioecious (* Contrib. alia biol. 

 fior. d. gen. Euphorbia,' Fasc. i, Palermo, 1824). 



784. Dalechampia Plum. 



2541. D. Roezliana Muell. Francke, whose observations were made in the 

 Freiburg i. B. Botanic Garden, states that in this species the pollination of female 

 flowers is not excluded but rendered difficult. 



j 785. Ricinus L. 



2542. R. communis L. (Delpino, Malpighia, Genova, iii, 1889.) This 

 , species is strongly anemophilous, as shown by the explosive dehiscence of the anther- 

 i lobes. 



DAVIS. Ill B b 



