212 
BRITISH BEES. 
face flat; clypeus transverse, margined; labrum trans¬ 
verse, slightly rounded in front; mandibles bidentate; 
cibarial apparatus moderately long; tongue lanceolate, 
fringed with delicate hair; paraglossae about one-tliird 
the length of the tongue, abruptly terminated, lacerate 
and setose at the extremity; labial palpi rather longer 
than the paraglossae, the basal joint considerably the 
longest, all the joints subclavate and diminishing both in 
robustness and length to the apex ; labrum half the 
length of the entire apparatus, its inosculation acutely 
triangular; maxillae subhastate, as long as the tongue; 
maxillary palpi six-jointed, less than half the length of 
the maxillae, the joints short, subclavate and decreasing 
gradually from the base to the apex. Thorax densely 
pubescent, obscuring its divisions; metathorax trun¬ 
cated ; wings with three submarginal cells, and a fourth 
slightly commenced, the second subquadrate and receiv¬ 
ing the first recurrent nervure in its centre, the second 
recurrent nervure issuing from beyond the centre of the 
third submarginal cell; legs all pilose, especially the 
posterior pair, which have hair beneath the coxae and 
trochanters, above only on their femorse, but surrounding 
the tibiae, and as dense externally upon their plantae; 
claws distinctly bifid. Abdomen ovate, truncated at the 
base, the segments banded at their apex, with decumbent 
down, which becomes densely and widely setose on the 
fifth segment, the terminal segment having a central tri¬ 
angular glabrous plate, carinated down the centre, and 
very rigidly setose laterally. 
The male scarcely differs, except in having the antennae 
practised with poor Bainbridge’s Osniia pilicornis, to which he had at¬ 
tached this manuscript name, he being the first to introduce it, haying 
caught it at Birchwood. 
