OSMIA. 
295 
base to the acute apex; paraglossae very short, coadunate 
at the base and acuminate at the apex; labial palpi more 
than half the length of the tongue, the two first joints 
membranous and long, the basal one the broadest, seated 
on a petiole and not so long as the second, which tapers 
to an acute point, before the apex of which the remain¬ 
ing two short subclavate conterminous joints articulate; 
labium about one-third the length of the tongue, acutely 
produced in the centre of its inosculation; maxillae as 
long as the tongue, subhastate and acuminate; maxil¬ 
lary palpi four-jointed, rather short, the joints subequal 
and subclavate, but the second is both the most robust 
and slightly the longest. Thorax oval or globose ; pro- 
thorax inconspicuous; scutellum lunulate and convex; 
post-scutellum transverse and linear; the metathorax ab¬ 
ruptly truncated; wings with two submarginal cells,and a 
third distinctly commenced, the second the longest, and 
receiving both the recurrent nervures, the first towards 
its centre and the second near its termination; legs 
moderate, setose, the plantae of all with a dense brush 
beneath; claw-joint longer than the three preceding; 
claws simple. Abdomen short, cylindrical, convex, the 
terminal segment slightly pointed, the ventral segments 
densely pilose in parallel lines from the second. 
The male differs in having the antennae longer and 
always filiform, the ventral segments very concave, and 
the terminal dorsal segment variously mucronated, tu- 
berculated, spinose or serrated, and the claws bifid. 
NATIVE SPECIES. 
1. leucomelana, Kirby, $ . 3-4| lines. (Plate 
XIV. fig. 3 £ ? .) 
2. spinulosa , Kirby, ? . 3-4 lines. 
