i 
1894.] Flowers and Insects. 105 
latifrons Schin.; (42) L. cornicina F.; (43) Compsomyia 
macellaria F.; (44) Musca domestica L.; Anthomyidae: (45) 
omalomyia canicularis L.; (46) Anthomyia albicincta FIL; 
(47-48) Chortophila spp.; Sepsidae: (49) Sepsis sp.; YZ. acal- 
yptratae: (§0-53) spp.—all sucking. 
LEPIDOPLERA.—Lycaenidae: (54) Lycaena pseudargiolus 
B.-L.) 8. 
HEMIPTERA.—Capsidae: (55) Lopidea media Say, s. 
CLEMATIS PITCHERI Torr. and Gray.!—lIn this case we 
have a bumible-bee flower produced by a very simple modifi- 
cation. The sepals, instead of being expanded’ horizontally 
so as to admit all sorts of insects to the pollen produced in 
the anthers, and to the nectar secreted by the filaments, are 
thick and rigid and have their edges so closely approximated 
that bees are only admitted at the small opening formed by 
their separating tips. 
he flower is nodding and is purplish exteriorly. It mea- 
sures about 2™ long and opens to the extent of 5"". The tips 
of the sepals are pointed and reflexed, so as to form foot-holds 
for the visiting bumble-bees. As observed above, nectar is 
Secreted by the filaments. After a bee has inserted its head 
as far as it will go, it still needs a proboscis from 12 to 15™" 
long to exhaust the nectar supply. 
In newly opened flowers, the stigmas are so far advanced 
(4"") before the anthers that cross-pollination very readily 
eccurs by the bees touching them before disturbing the pol- 
nite L ter, when the inner anthers dehisce, spontaneous 
oe may occur by these anthers, which finally equal 
oo coming in contact with the latter. 
. rie Seen the flowers visited for nectar by Bombus va- 
fans Sm. 9, and by Volucella vesiculosa F. 
RaNuNcuLus SEPTENTRIONALIS Poir.—The plant is com- 
scattered patches in low, rich soil. At first 
or 2%", the stems finally elongating so as to 
the surrounding grass. The spreading stems 
open flowers at a time, which renders them 
but increases the probability of cross-pollin- 
Wers of distinct plants. 
__ This p} ; 
it Am. Nat <a C_Viorna, which is desctibed and figured by Foerste 
» XIX.—No, 3 
i 
