220 Transactions of the Academy of Science of St. Louis 
Megachile brevis (Say) 
A leaf-cutter bee, carrying a bit of green leaf was seen to 
crawl under a loose rock at the side of the road at Kimmswick, 
Mo., on September 28, 1930. Lifting the rock I found a cup 
made of bits of petals cut from the blossoms of Acacia flowers. 
The outside of the cup was composed of several layers of bits 
of these petals so tightly pressed together that they could hardly 
be separated. The mother had probably moistened them with 
saliva before pressing them together. he inside of the cup 
was made of bits of green leaves. This species ae nests in 
the pitchers of pitcher plants, Sarracenia minor. Among the 
plants brought to me from Tifton, Ga., a three celled nest iiade 
of bits of leaves was found. One gave fourth an adult Septem- 
ber 13, 1932. 
Megachile pugnata (Say) [S. A. R.] 
Dozens of these bees were seen flying low near the ground 
in an open railroad shed at White House, Mo., on June 16, 
1922. They were seen in a courtship dance for an ‘hour, weaving 
in and out just above the gravel floor. A pollen laden female 
was seen to fly in their midst, and mating with one of the males 
took place immediately. 
Megachile sp. 
Megachile bees make nests in various hollow objects. They 
may be seen nesting in hollow twigs and in the Anthophora bee 
burrows, in holes in rocky cliffs, etc. I wish here to record 
that this unidentified species makes nests in the large hollow 
precrie galls knows as oak apples. One such nest of sev- 
ral cups, made of cuttings of green leaves, was taken on 
October 1922, at Barnhardt, Mo. 
Andrena perezana (Viereck & CkIl.) 
Many bees were seen pceapy ing burrows in a large clay-bank 
at St. Albans, Mo., on May 6, 1932. I could not tell whether 
the burrows were made by he bees or whether they were using 
burrows abandoned by other insects. It was interesting, how- 
ever, to see that several bees were biting the sandy soil from 
the opening of their tunnels and scraping it back into their 
burrows. This material was probably used as filler and the 
behavior demonstrates that even though the bees may use ready- 
made burrows they have not lost their ability to use their jaws 
on the soil. 
Andrena rudbeckiae (Robt.) 
Several bees were taken from flowers of black-eyed Susan, 
Rudbeckia hirta, at Glencoe, Mo., June 30, 1930. 
