7C) BEES OF GREAT BRITAIN. 



have been attacked by Stylops: of two males and one female 

 the latter has a female Stylops in its abdomen ; one of the former 

 has the marks of two males havmg escaped from it, the other 

 appears to have had but one. Some species of Andrena appear 

 to be always^ attacked, others occasionally, whilst a few appear 

 to escape entirely. 



ue 



29. Andrena bimacnlata. 



A. nigra, rufescenti-villosa ; capite atro ; ventre basi utrinq 

 macula rufa notato. 



Melitta bimaculata, Kirhy, Mon, Ap, A^igl. ii. 115. 56. 

 Andrena bimaculata, Sinith, ZooL v. 1739. 22. 



Male. Length 5^ lines.— Black; the pubescence of the head 

 black, brownish on the clypeus : antennie nearly as long as the 

 thorax, the joints of the flagellum subarcuate. Thorax"! above 

 clothed with obscure ferruginous pubescence, on the sides and 

 beneath it is paler ; wings subhyaHne, faintly clouded at their 

 apical margins, the nervures pale ferruginous. Abdomen 

 ovate-lanceolate, the margins of the segments obscurely testa- 

 ceous ; thinly covered with pale ferruginous pubescence ; be- 

 neath, the second segment has two red spots. * B.M. 



This male most closely resembles that of A. Trimmer ana, but 

 IS certamly distinct ; it has no tooth at the base of the mandibles. 

 Only two specimens are known,— the typical one, and that in the 

 British Museum. 



30. Andrena Smithella. 



J. nigra, grisescenti-subhirsuta ; thorace abdomlneque hirsuto- 

 fulvescentibus J segmentorum marginibus paUidis. 



IMelitta Smithella, Kirby, Mon. Ap. AngL ii. 131. 70. 

 Andrena Smithella, Smith, Zool v, 1748. 37, 



Female, Length b-G lines.— Black ; the pubescence on the fiice 

 pale fulvous, a few scattered black hairs on the vertex. Thorax : 

 above, clothed with rufo-fulvous pubescence : the tegular nigro- 

 piceous, the wings hyaline, faintly clouded at their apical mar- 

 gms, the nervures ferruginous ; the legs have a pale fulvous 

 pubescence, the floccus and scopa beneath bright pale fulvons, 

 havmg in certain hghts a silvery hue; above, slightly fuscous. 

 Abdomen ovate, slightly depressed, the segments having, except 

 at their base, a long, suberect, pale fulvous pubescence ; the 



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