152 APID2E. 



two species of Omnia named, as well as others of 0. cornuta also 

 placed in the collection, having been introduced by mistake subse- 

 quent to Dr. Leach's death, who left his boxes of continental and 

 British Aculeata mixed, to be separated and arranged by others. 

 The habit of cutting sections of the petals of flowers for the purpose 

 of lining their nests is not confined to the Osmia papaveris, which, 

 from using for that purpose the petals of the scarlet poppy, has in 

 consequence acquired the popular name of the poppy-bee. Megachile 

 centuncularis I have seen cutting the petals of scarlet geraniums, 

 and also Megachile argentata lining her nest with the bright yellow 

 petals of Lotus cornicidatus. 



Section I. Body more or less metallic. (Sp. 1-3.) 



1. Osmia rufa. 



0. atra, hirsuta ; abdomine seneo, hirsute rufo tecto ; fronte in 

 femina bicorni, atra ; fronte in mare simplici, hirsuto albida ; 

 ano integro. 



Osmia rufa, Smith, Bees Great Brit. 162 $ £ . 



Nyland. Notis. ur Stilish, pro Faun, et Flo. Fenn. ii. 269. 

 Apis rufa, Linn. Syst. Nat. i. 954 <$ . 



Fabr.Ent. Syst. ii. 334 



Rossi, Faun. Ftrus. ii. 103. 



Panz. Faun. Germ. 56. 10. 

 • Apis bicornis, Linn. Syst. Nat. i. 954 $ • 



Fair. Fnt. Syst. ii. 334. 



Christ. Hym. 159, tab. 12. fig. 9. 



Rossi, Mantis. 310. 



Kirby, 3Ion. Apum Angl. ii. 271 S 2 • 

 Apicis bicornis, Harris, Expos. 162, tab. 49. fig. 4 $ . 

 Apicis agino, Harris, Expos. 162, tab. 49. 7 $ . 

 Apis cornigera, Rossi, Faun. Etrus. ii. 108. 



Panz. Faun. Germ. 55. 15. 

 Megachile cornigera, Spin. Ins. Ligur. i. 147. 

 Anthophora bicornis, Fabr. Syst. Piez. 375. 



Zett. Lns. Lapp. 466. 

 Osmia bicornis, Latr. Encycl. Meth. viii. 576. 



St. -Far g. Hym. ii. 314. 



Smith, Zool. ii. 745. 



Nyland. Notis. ur Sallsk. pro Faun, et Flo. Fenn. i. 259. 



Schenck, Nass. Bien. 338. 



Gerst. Stett. ent. Zeit. (1869) 351. 



Thorns. Hym. Scand. ii. 235. 

 Amblys bicornis, King, Illig. Mag. vi. 198. 

 Osmia hederae, Smith, Zool. ii. 747, var. minor J . 



Female. Length 4-6J lines. — Head and thorax nigro-seneous ; the 

 face clothed with black pubescence, and armed on each side of the 

 clypeus with a stout horn, which is oblique or sometimes notched 

 at the apex, the horns bent inwards. Thorax — the disk clothed 

 with black pubescence, intermixed with fulvous posteriorly ; that 

 £>n the sides beneath, on the metathorax, and femora of a yellowish 



