BEES OF GREAT BRITAIN. 183 



the margin of the vertex ; the mandibles very stout and pro- 

 minent, quadridentate, the two apical teeth rounded, the inner 

 teeth obtuse. Thorax : the pubescence on the disk fusco-fer- 

 ruginous, at the sides it is pale fulvous ; the wings subhyaline, 

 their apical margins faintly clouded, the nervures and tegulae 

 rufo-piceous ; the legs have a short glittering pale pubescence, 

 the tarsi beneath golden-fulvous ; the calcaria and claws ferru- 

 ginous, the latter black at their tips. Abdomen oblong-ovate, 

 the base having a long pale fulvous pubescence, towards the 

 apex the segments have a short black pubescence, the apical 

 margins of the segments have a narrow pale marginal fringe, 

 usually more or less interrupted on the basal segments ; be- 

 neath densely clothed with bright fulvous pubescence, at the 

 extreme apex it is fuscous. B.M. 



Male. Length 6-7 lines. The face clothed with bright golden- 

 yellow pubescence ; the antennae having the apical joint com- 

 pressed and dilated ; the inferior margin of the mandibles rufo- 

 testaceous. Thorax : the disk clothed with fulvo-ochraceous 

 pubescence, that on the sides and beneath much paler ; the 

 anterior coxae armed with an obtuse tooth, which has a minute 

 acute spine or point at its apex ; the coxae and trochanters have 

 a long dense fringe of very pale yellow pubescence ; the femora 

 and tibiae pale in front, the former having a longitudinal stripe 

 in the middle and also the margins, rufo-piceous; the mar- 

 gins of the tibiae rufo-piceous ; the tibiae are black above to- 

 wards the base, and pale at the apex ; the tarsi broadly dilated, 

 the basal joint broader than the tibiae, produced and rounded 

 at its apex in front ; the second, third and fourth joints trans- 

 verse, gradually narrowing to the width of the apical or claw- 

 joint, the whole having a dense pale yellow fringe behind, the 

 margin of which has a ferruginous stain ; the posterior tibiae 

 incrassate, bent inwards ; the tarsi also bent, the joints short and 

 stout, the basal one dilated. Abdomen oblong-quadrate, ha- 

 ving a pale fulvous pubescence ; the sixth segment has a deep 

 depression in the centre, its apical margin emarginate in the 

 middle, the sides crenulated ; the margin of the seventh seg- 

 ment has a minute tooth on each side. B.M. 



At the time when I first described this species in the ( Zoologist 5 

 in 1844, 1 had not seen a specimen of the true M. lagopoda, and 

 was led to believe that it was synonymous with the present spe- 

 cies ; it appeared possible that Mr. Kirby might have viewed 

 the specimen from above, and thus overlooking the dilatation of 

 the apical joint of the antennae, had in mistake described M. la- 



