298 Trans. Acad. Sct. of St. Louis 
The absence of an opening in the stamen tube shows 
that nectar is wanting, and that the flowers are adapted to 
female nest-making bees, but they are visited by other 
insects. In the bud the oblong anthers dehisce, filling the 
tip of the keel with pollen. When the flower opens, the 
round anthers are still closed. They no doubt aid in 
forcing the pollen of the long anthers into the tip of the 
keel and then dehisce. 
The tip of the style is provided with a brush of hairs, 
which, when the keel is depressed, forces the pollen out 
of the tip of the keel. A long ribbon of pollen first ap- 
pears and then the tip of the style. The style returns 
to its former position when the keel is released, and then, 
when the keel is forced down, again sweeps out the pol- 
len. F. 7-Ap. 26, 29 species, 93 individuals observed, 
Mr. 5-Ap. 5. 
Lone-roneuzp Brzs (10:35)—Anthophor.: Emphorop- 
sis 2, se, 1; Ap.: Apis sc, 2; Bomb.: Bombus american- 
orum 2,1; Megachil.: Coelioxys octodentata ¢, 1, C. sayl 
é ?,5, Megachile floridana 3,1, type, M. generosa ¢ %, 
7, M. lanuginosa 3 9, s¢.,7 , M. mendica ¢ 2, sc., 8, Saro- 
gaster 6,2. Sworr-roneuep Buss (2:9)—Halict.: Augo- 
chlora sumptuosa 2°, ¢., 2, Chloralictus floridanus 2, fsp-, 
7, type. Leproprera (17:49, n.)—Hesperi.: Achalarus 1, 
Cocceius 2, Hylephila 1, Lerodea 6, Megistias 1, Pamphila 
3, Polites baracoa 2, P. brettus 7, Thanaos juvenalis 1, T. 
martialis 1, Thorybes 13; Lycaen.: Strymon melinus 1; 
Nymphal.: Junonia 2, Vanessa virginiensis 1; Papilion.: 
Papilio philenor 5, P. troilus 1; Pier.: Eurema nicippe 1. 
T1um Inroysum, Ma., Y.—The stems are prostrate, the 
short, dense-flowered racemes only turning up from the 
ground. The flower is pale yellow and measures 11 mm. 
The calyx tube measures 3 or 4 mm. 
