1893.] Flowers and Insects. 267 
Flowers and insects. XI. 
CHARLES ROBERTSON. 
STELLARIA MEDIA Sm.1—‘‘Nat. from Eu.”—The plant 
was observed in bloom from March 14th to Oct. 25th. It is 
not abundantly visited except in early spring, when the flow- 
ers form quite conspicuous patches. At this time frequent 
cross-pollination is inevitable. On seven days, March 25th 
to April 29th, and Oct. 15th, I observed the following visit- 
ors, all sucking:— 
_ Hymenoptera—A pide : (1) Apis mellifica L. %; (2) Cerat- 
ma dupla Say 3; (3) Osmia lignaria Say ¢; (4) Nomada bi- 
cya Say 4; (5) N. luteola Lep. 4; Andrenide: (6) Panur- 
- andrenoides Cr. 4; (7) Andrena sayi Rob. 32; (8) A. 
illinoensis Rob. 9; (9) A. flavo-clypeata Sm. 4; (10) A. cres- 
“ay Rob. 49; (11) A. forbesii Rob.9; (12) Augochlora pura 
Sy (13) Halictus lerouxii Lep. 9; (14) H. ligatus Say $5 
ie pe aeirintos Nyl.¢; (16) H. pilosus Sm.9; (17) H. gra- 
rs. ob.9; (18 _H. confusus Sm.29; (19) H. stultus 
oak “) Colletes inaequalis Say 4; Chalcidide: (21) Smicra 
lead t.; Ichneumonide: (22) Pimpla novita Cr. (deter- 
Say y Ashmead); Tenthredinide: (23) Dolerus arvensis 
ane cetophilide: (24) Sciara sp.; Syrphid@: (25) 
(27) ~ Sapae Lw.; (26) Melanostoma obscurum Say; 
Ychirus quadratus Say; (28) Syrphus ribesii L.; (29) 
' americanus Wd. - i ; 
Eriees': -; (30) Mesograpta marginata Say; (31) 
.— tenax L, ; E. aeneus F.; (33) E. dimidiatus 
2 
"+ (34) Brach : gate 
L; co ypalpus frontosus Lw.; (35) Syritta pipiens 
Will pone: (36) Gonia frontosa Say, ab.; (37) G. exul 
| areophagide : (38) Cynomyia sp.; Muscide: (39) 
‘See Axel]. : 
Labbock: British qanoraningarna for de Fanerogama Vaxternas Befruktning; 
Flowers Wild Flowers in Relation to Insects; Miiller: Fertilization of 
Met Unteroche ee ‘0% 
Kent, a Belgischen chungen iiber die Befruchtung einiger phaneroga 
| i8S d Bests Flora, Bot. Centralblatt, xxmt; Schulz: Beitrage zur 
ubungseinrichtungen u a eg & GET gt * Jon Phane- 
“ d 
