280 
BRITISH BEES. 
clavate, first joint of flagellum globose, the remainder sub- 
equal ; face flat; clypeus triangular, truncated at its base, 
slightly rounded in front and convex; labrum longitu¬ 
dinally oblong, the sides parallel and concavo-convex ; 
mandibles dilated at the apex, where they are quinque- 
dentatc; the alternate teeth, smallest; cibarial apparatus 
long ; tongue very long, tapering to its extremity ; para - 
glosses very short, one-sixth the length of the tongue, 
coadunate at the base and subhastatc ; labial palpi more 
than half the length of the tongue, the two first joints 
very long, the second the longest, and both tapering to 
the acute extremity of this, where, just before its apex, 
the third very short subelavate joint articulates with 
the still shorter terminal joint conterminous with it; 
labium onc-third the length of the tongue, its inoscula¬ 
tion with an acute projection in the centre; maxilla: as 
long as the tongue, subhastatc and acuminate; maxil¬ 
lary palpi springing from a deep sinus at its base, very 
short, two-jointed, the basal joint the shortest, and the 
second obtuse one terminating with a few rigid setae. 
Thorax subglobose; prolhorax inconspicuous; mesa- 
thorax slightly convex, wing-scalcs large; scuteltum lunu- 
late,projecting and impending over the metathorax, which 
is truncated; wings with two submarginal cells, and 
a third indistinctly commenced, the second slightly the 
longest, and receiving the two recurrent nervures one at 
each extremity; legs moderate, subsetose, the tibiae 
fimbriated along the edges, the anterior spurs slightly 
palmated; the planta; of the four anterior pairs longer 
than their tibiae, but those of the posterior not quite so 
long, and all densely clothed all round with a brush of 
short close hair ; the claws distinctly bifid. Abdomen 
semicircular, very convex; the base truncated and hoi- 
