106 BEES OF GREAT BRITAIN. 



diate segments have a white marginal fringe on each side, the 

 apical fimbria pale fulvous. B.M. 



This species closely approaches A. chrysosceles, but it is larger, 

 and its abdomen is not punctured. 



68. Andrena xanthura. 



A. atra, pallide villosa; ano, tibiis plantisque posticis rufescen- 

 tibus ; abdomine fasciis albidis interruptis. 



Melitta xanthura, Kir&y, Mon. Ap. Angl. ii. 164. 105 $ $ . 

 Melitta ovatula, Kirby, Mon. Ap. Angl. ii. 149. 89 $ var. 

 Andrena xanthura, Smith, Zool. v. 1928. 67. 



Nyland. Revis.Ap. Boreal p. 257. 24. 

 Andrena chrysosceles, Nyland. Ap. Boreal, p. 218. 15 ^ $ . 



Female. Length 5-6 lines. Black ; the face covered with 

 short griseous pubescence ; the labrum ciliated with bright 

 golden-yellow hairs ; the pubescence on the vertex is sparing, 

 and rufo-fulvous ; the apical joints of the flagellum piceous 

 beneath. Thorax : the pubescence on the disk rufo-fulvous, 

 sparing, but dense on the sides and on the post-scutellum ; on 

 the sides of the metathorax it is much paler ; the tegulse rufo- 

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

 margins, the nervures ferruginous ; the pubescence on the tho- 

 rax beneath and the fringe on the femora griseous, the floccus 

 yellowish-white ; the tarsi and the posterior tarsi rufo-testa- 

 ceous, the anterior and intermediate tarsi more or less obscure; 

 the scopa of a golden-yellow. Abdomen oblong- ovate, slightly 

 depressed, shining, very delicately and closely punctured ; the 

 apical margins of the three intermediate segments have a nar- 

 row fringe of white pubescence, the first and second widely 

 interrupted ; the apical fimbria bright fulvous ; the margins of 

 the segments beneath ciliated with long pale fulvous hairs. 



B.M. 



Male. Length 3^-5 lines. The face clothed with reddish-brown 

 pubescence, rather paler on the clypeus; the flagellum rufo- 

 testaceous towards the apex beneath, and nearly as long as the 

 thorax ; the disk of the thorax has a similar pubescence to the 

 face, on the sides of the metathorax it is much paler, as is also 

 that on the legs ; the wings as in the other sex ; the tarsi be- 

 neath have a golden-yellow pubescence. Abdomen oblong- 

 ovate, convex, slightly shining, very closely and finely punc- 

 tured ; the margins of the segments depressed, the intermediate 

 ones having a narrow fringe of pale pubescence, usually more 



