1896. ] Flowers and Insects. 267 
he supposes may hover in front of the flower in such a way as 
fo come in contact with the anthers and stigma. ‘ 
The flowers described by him are certainly larger than any 
Ihave seen. When watching the flowers being visited by 
bees and Syrphidz, it did not occur to me that there was any 
difficulty in their effecting pollination, though the smallest 
might obtain the nectar without often touching anthers or 
stigma. I see nothing about the flower to indicate an adapta- 
tion to insects with long tongues or to those of large size. 
About Carlinville, the plants are common, sometimes be- 
ing collected in quite conspicuous patches, which are very at- 
tractive to insects. The blooming time is from April 25th to 
May 16th. The scapes rise from 3 to 6 high. The flowers 
are pale blue, or sometimes white. The sepals expand 
widely, to the extent of two or more cm. The stigma is re- 
eptive with, or a little in advance of, the dehiscence of the 
anthers, The stamens, however, are so strongly divergent 
that insects May easily touch the stigma before coming in con- 
fact with them. The flowers are evidently adapted to bees, 
but are visited by flies and other insects. On the morning of 
ay 8th, in about an hour, I captured the following visitors: 
HYMENOPTERA—Apide : (1) Apis mellifica L. 8, s., ab.; (2) Bombus 
qiericanorum F. g, s., one; (3) Synhalonia frater Cr. 49, s., freq.; (4 
S belfragei Cr. 8, S.; (5) Ceratina tejonensis Cr. 4, s.; (6) C. dupla Say 
*S3 (7) Osmia albiventris Cr. 89, s. & c. p.; (8) Nomada superba Cr. 
tal ct (9) N. americana Kby. 8, s.; Andrenide: (10) Halictus pec- 
h 
ao 
es & . pi ab.; (16) ie mera 
>, & C. p., freq.; (17) H. pruinosus Rob. 9, s. & c. p., freq.; (1 
Augochlora pura ao g, ( » 19 - similis Rob. 9, s.; (20) Agapostemon 
( diet: : 433} Polistes pallipes Lep., s.; Zumenae. 
7} Odynerus tigris Sauss., s. C ni- 
tid PTERA—Syrphide : 23) Chrysogaster pictipennis Lw.; (24) Tach. 
ing 3 (25) Eristalis dimidiatus Wd.; (26) Syritta pyres sha 
tom. (27) Micropalpus fulgens Mg.; Sarcophagide: (28) ee Nia 
co torum L.; (29) Helicobia helicis Twns.; Musctda: (30) Wik : 
Gr F.; (31) t. caesar L.; Anthomyida: (32) Phorbia acra “3 
- “usciceps Zett.—all s. : 
teat POPTERA—Rhopalocera : (34) Pyrameis atalanta L.; (35) P. hun 
Cor? 3%) Colias philodice Gdt., freq.—all s. SE Ege 
SLEOPTERA—Cyccinellidee - (37) Hippodamea 15-macuiata “y 
; — literature of Camassia see: scsitliati do! Pret 
°ew, Beobacht iiber Blumenbesuch von Insekten 
nptns des Piotaita hei ‘Giaa zu Berlin. Jahrb. eS nae 
tge, 11* 82 117. (14, 49) 1884—(2) Loew, Bliithenbiologische 
’*\ Pringsheim’s Jahrbiicher 28: 76-77. 1892. 
