28 BEES OF GREAT BRITAIN. 



with the British species. It is quite probable that the sexes 

 are not correctly united. Mr. Kirb)- placed them together on 

 no authority of observation. 



6. Halictus sexnotatus. * 



H. aterrimus; pube incana; abdominis segmentis tribus inter- 

 mediis basi utrinque niveo-albis. 



Melitta sexnotata, Kirby, Mon. Ap. AngL ii. 82. 37. t. 15. f. 7, 8. 

 Halictus sexnotatus, WalcJcen. Mem. Halict. p. 72. 



St. Farg. Hym. ii. 273. 11. 



Smith, Zool. vi. 2174. 26. 



Nyland. Revis. Ap. Boreal, p. 239. 5. 



Female. Length 5 lines. Jet*black ; the face has a little 

 scattered white pubescence ; the thorax very closely and finely 

 punctured, and having a thin scattered pale pubescence ; the 

 wings subhyaline, their apical margins clouded, the nervures 

 nigro-piceous ; the scopse on the posterior tibiae are slightly 

 fuscous above, the tarsi beneath pale yellow. Abdomen glossy 

 and very delicately punctured, the base has a little white pubes- 

 cence, an angular patch of short snow-white pubescence on 

 each side of the basal margins of the second, third and fourth 

 segments, those on the fourth segment frequently obliterated ; 

 beneath, the margins of the segments have a thin fringe of 

 long white pubescence. B.M. 



Male. Length 4 lines. The pubescence as in the female; an- 

 tennae shorter than the thorax, the flagellum nigro-piceous 

 beneath ; the face covered with short white pubescence, the 

 clypeus having a white spot at its apex. Abdomen oblong, 

 spotted as in the other sex. B.M. 



This is a species hitherto rare in cabinets. Mr. Kirby took it 

 at Barham ; the only locality where it has been recently met 

 with is Weybridge : the female occurs there in June and Septem- 

 ber, in the lane leading to Byfieet, opposite the wood, about 

 half a mile from the railway station ; the male occurs in Sep- 

 tember : specimens have been captured at Portsmouth. This is 

 the most beautiful species hitherto found in this country, and the 

 exact locality is therefore pointed out. 



