} 
204 BOTANICAL GAZETTE. [ August, 
Smaller visitors do not bend the peduncles. The Synhalonia 
bent them so that the stamens and styles turned to an 
bent to one side, she lighted on the stamens and sucked the 
upper nectary. Only once did she insert her proboscis into 
all of the nectaries, and then with difficulty, since she had to 
turn upside down and hang to the stamens. 
he very fact that a bee lighting on the stamens sucks 
the upper nectary first must have a serious influence on the 
lower ones. Since bees are often disturbed before they have 
emptied all of the nectaries, the one which is most conven- 
lent is most likely to be sucked.’ Darwin has observed! that 
‘* when flowers having more than a single nectary are visited 
the bees which afterward visit such flowers insert their pro- 
boscides only into one of the nectaries, and if they find this 
exhausted they instantly pass to another flower.” Now, 
Suppose a bee neglects the lower nectaries from being dis- 
turbed, or, like the Synhalonia, because it objects to revers- 
ing, the next bee trying the upper nectary and, finding tt 
empty will come to the erroneous conclusion that the lower 
a is an additional Cause of the abortion of the lower nec 
aries, by rendering them less accessible. . 
ibiscus lasiocarpus15 is a good example of a flower in the 
si on the base of the staminal column. The free ends ol 
e filaments are directed from the upper and lateral portions 
which |; »SO as to dust the ventral surface of the Li 
wateh lights upon them. The styles are bent upward, hold- 
“Orchids, 49. 
15 Pay 
spi tee ‘ Adapted to larger bees, Apide, of which I have found the i 
Melissodes bimaculata sy, (f), B. Pennsylvanicus De Geer. (n), Apathus elatus Fabr. ta 
t. Farg. (m), Emphor bombiformis Cress. (mf), Megachile brevis Say 
