290 
BRITISH BEES. 
The male differs in the antenna being rather longer, 
more distinctly filiform, the seventh segment of the 
abdomen concealed under the extremity of the sixth, and 
the venter from the third segment longitudinally deeply 
concave, the plate of the third itself covered with hair; the 
claws more robust and each equally bifid, not bidentate. 
NATIVE SPECIES. 
1. truncorum, Linnaeus, ? . 3-31 lines. (Plate 
XIII. fig. 3 $ $ .) 
truncorum , Kirby. 
GENERAL OBSERVATIONS. 
The names of insects are not always very aptly given, 
for the only available derivation of this appears to be 
from eptov, wool; in allusion to the clothing of its 
venter; but, if so, it should be spelt without the H, for 
the first letter is without an aspiration. The habits of 
these closely resemble those of the preceding genus, to 
which they have a great personal likeness, and therefore 
their natural history would be but its reiteration. Our 
solitary species is a rare insect, but I expect western 
England would produce it. It is like those of the pre¬ 
ceding genus, of a uniform black colour, punctured, 
but it approximates more closely than they do to the type 
of form exhibited in the genus Osmia. They visit the 
same flowers as the preceding genus. 
Genus 23. ANTHOCOPA, St. Fargeau. 
(Plate XIV. fig. 2 c??.) 
Gen. Char. : Body glabrous, subpubescent, shining. 
Head subglobose, as wide as the thorax; ocelli placed 
in a slight curve on the summit of the vertex; antenna 
