68 BEES OF GREAT BRITAIN. 



Female. Length 4-5 lines. Black; the face clothed with 

 brown pubescence, the antennae nigro-piceous beneath ; the 

 thorax has a pale ferruginous pubescence above as well as be- 

 neath ; wings subhyaline, their nervures ferruginous ; the legs 

 fusco-ferruginous, the posterior tibiae and the tarsi ferruginous ; 

 the floccus pale fulvous ; the scopa fulvous, having a golden 

 lustre ; the abdomen ovate, finely punctured ; the margins of 

 the basal segments thinly fringed with pale fulvous pubescence ; 

 the apical fimbria sooty-black ; the margins of the segments 

 beneath have a pale fringe. B.M. 



This insect, although resembling A. Gwynana, is distinct : the 

 legs are of a different colour, the abdomen is punctured, and it 

 is usually met with in June : in the Kirbian collection it stands 

 along with A. Gwynana. The male is not known, probably it 

 may be A. pilosula of Kirby. 



20. Andrena helvola. 



A. nigra; thorace, abdominisque basi fulvo-rufis, hirtis ; tibia- 

 rum posticarum scopa flavescenti. 



Apis helvola, Linn. Faun. Suec. p. 421. 1693 ? ; Syst. Nat. i. 955. 

 16, <$* Cab. Mus. Linn. Soc. 



Fabr. Ent. Syst. ii. 310. 11 ; Syst. Piez. p. 326. 21. 



Spin. Ins. Lig. fasc. i. p. 122. 9. 



Melitta helvola, Kirby, Mon. Ap. Angl. ii. 119. 59. t. 15. f . 9 $ . 

 Melitta angulosa, Kirby, Mon. Ap. Angl. ii. 127. 67 $ . 

 Andrena helvola, Rossi, Faun. Etrus. ii. 97. 895. 



Smith, Zool. v. 1742. 26 c? ? . 



Nyland. Supp. Ap. Boreal, p. 99 ; Revis. Ap. Boreal, p. 254. 

 16. 



Female. Length 5-5^ lines. Black; the pubescence on the 

 clypeus pale fulvous, above and on the sides of the face it is 

 fuscous; the mandibles ferruginous at their apex. Thorax 

 clothed above with rufo-fulvous pubescence, at the sides and 

 beneath it is griseous ; the wings hyaline, their apical margins 

 faintly clouded, the tegulae and nervures ferruginous; the 

 femora beneath fringed with white pubescence, the floccus 

 white, the scopa pale fulvous, the apical joints of the tarsi fer- 

 ruginous. Abdomen subovate, the pubescence at the base ful- 

 vous, beyond which it is cinereous; beneath, the margins 

 fringed with cinereous pubescence. B.M. 



Male. Length 5-51 lines. Black; the head wider than the 

 thorax, subquadrate ; the clypeus covered with long white pu- 

 bescence, at the insertion of the antennae it is pale fulvous ; 



