60 
Psyche 
[March 
SOME WASP-LIKE BEES FROM GUATEMALA 
By T. D. A. Cockerell 
University of Colorado, Boulder, Colorado 
The bees recorded below were, with one exception, col- 
lected by J. Bequaert in Guatemala. At first sight, the col- 
lection appears to consist of small wasps, and whatever any 
one may think about Mullerian mimicry, these resemblances 
must be admitted to be very remarkable, and to call for 
some explanation. 
Epeolus fulvopilosus Cameron 
Seventeen specimens, including both sexes. Finca Moca 
near Guatalon, 1,000 m., at flowers of Synedrella nodiflora 
and Melampodium divaricatum. Finca Sa. Emilia near 
Pochuta, 1,000 m. This species was described in 1902, from 
a specimen caught on the west coast of Mexico by G. F. 
Matthew. This was a male. The female is similar, rather 
more robust, the fifth tergite with a short silvery-white 
lunule. The first tergite has a very broad pale fulvous band 
of tomentum. A related species is E. xanthurus Cockerell, 
from Ecuador. I said of this when describing (1917), 
“with the aspect of an Odynerid wasp.” 
Megachile aurantipennis Cockerell 
Five specimens, both sexes. Moca near Guatalon, 1,000 
m. ; Sa. Emilia near Pochuta, at flowers of Melampodium 
divaricatum. Described from Guatemala. Very closely al- 
lied to M. pulchriventris Ckll., from British Guiana. 
Osiris fasciatus (Radoszkowsky) 
One male; Moca near Guatalon, 1000 m., April 26, 1931. 
Length about 11 mm. Radoszkowsky described the female, 
from Orizaba, Mexico. The male is a little smaller, but 
