Insects. 745 



This species is by no means uncommon in the south of England. 

 I am not aware that the male has been previously described. Both 

 my descriptions are drawn up from specimens bred from a snail-shell. 

 Mr. Kirby has described a male, but did not point out the true one ; 

 the original specimen in his cabinet is the male of his Apis xantho- 

 melana, or Osmia atricapilla of Curtis. 



Sp. 7. Osmia xanthomelana. 

 Apis xanthomelana, Kirby. Osmia atricapilla, Curtis. 



Female. — Length 4j — 6j lines. Black. Head deeply punctured, 

 the face clothed with black hair, thinly scattered on the vertex; upon 

 the cheeks are some longish black hairs. The thorax deeply punc- 

 tured, and clothed above with reddish brown hair, beneath with black 

 hair, which also clothes the legs; the tarsi beneath are dark brown. 

 The abdomen is obsoletely punctate, and has the first and base of the 

 second segment clothed with reddish brown hair, the rest thinly cloth- 

 ed with black hair, beneath densely clothed with black hair. 



Male. — Length 4 — 5j lines. Closely punctured. Head as wide 

 as the thorax ; the face clothed with white hairs, gradually inclining 

 to ochraceous towards the vertex ; the cheeks have a thin griseous 

 pubescence. The thorax above is clothed with fulvous hair, beneath 

 with hoary, as well as the legs. The abdomen above is clothed with 

 bright fulvous hair ; the sixth segment is emarginate, the seventh in- 

 curved and bidentate. 



This species was originally discovered by Mr. Kirby, and arranged 

 by him at the end of his division of leaf-cutter bees. It appears to 

 be very local ; I have only met with it at Birch-wood, Kent, in May : 

 Mr. Waterhouse took it also at Darenth wood, and in 1835 in tolera- 

 ble abundance near Liverpool. It also occurs in the neighbourhood 

 of Bristol. 



Sp. 8. Osmia bicornis. 



Female, Apis bicornis, Linn., Kirby. Apis cornigera, Panzer. 



Male, Apis rufa, Linn., Fab. 



Female. — Length 4 — 6 lines. Nigro-aeneous. The head close- 

 ly punctured, as wide as the thorax ; the face armed with two incurv- 

 ed horns, which have an obtuse tooth on the outside towards their 

 apex, the face clothed with long black hairs. Thorax deeply punc- 

 tured, clothed anteriorly with black hair, posteriorly with pale fulvous. 

 Beneath, all the femora are fringed with pale fulvous hair ; the tibiae 

 are thinly clothed with fulvous hairs ; all the tarsi beneath clothed 

 ii 2 H 



