92 THE ENTOMOLOGIST. 



present I cannot find any satisfactory grounds for dividing 

 the series. 



Osmia hcsseycs, sp. nov. 



$ . Length 7 mm. ; similar to 0. copelandica, Ckll., except as 

 follows : head narrower, obscurely greenish ; mesothorax and scu- 

 tellum dark olive green (metathorax and pleura black) ; hair of head 

 and thorax above pale yellow ; hind margins of abdominal segments 

 not at all reddened. Abdomen with white hair bands, failing in the 

 middle; ventral scopa white; wings dusky; antennae wholly black; 

 eyes green, blackish in front ; second joint of labial palpus longer 

 than first ; basin of first abdominal segment with a short but evident 

 transverse ridge above. 



(? . Head and thorax distinctly dark greenish ; hair of head and 

 thorax above distinctly vellowish ; eyes pale sage green. In the 

 Boulder County tables (Univ. of Colorado Studies, 1907, p. 252), it 

 runs to 0. jnoxima, from which it differs by its smaller size, black 

 abdomen with distinct hair bands and non-metallic legs. The 

 flagellum is wholly dark. 



Hah. Female (type), Boulder, Colorado, at flowers of Bessei/a 

 plantaqinea, June 1, 1908 {S. A. Rohwer). Male, Boulder, May 26, 

 1908 (S. A. Eohiver). 



A curious little species, rather resembling an AsJimeadiella. 

 It is really very much like the European Osmia submicans, Mar., 

 which I have from Brindisi {Morice), and also from Algeria and 

 Teneriffe. It may perhaps be found to intergrade with 0. cope- 

 landica, but at present they appear distinct. 0. copclandica, so 

 far as known, flies in September. 



Boulder, Colorado : Dec. 1909. 



SOME NEW BUTTERFLIES FROM FORMOSA AND 



JAPAN. 



By A. E. WiLEMAN, F.E.S. 



Sepliisa taiwana, sp. nov. 

 Male. Fore wings fulvous with three black spots of irregular 

 shape on the costal area, the first extends to just below the middle 

 of the cell, the second to the second median nervule, and the third to 

 the third median nervule ; a large black patch on the inner marginal 

 area extends from the base to just beyond the middle of the wing ; 

 the black, wavy, submarginal line increases in width from the middle 

 to the costa, and is separated from the black marginal line by a series 

 of fulvous lunules ; the space between the second costal spot and the 

 submarginal band is broken up by the broadly black nervules into 

 three small spots. Hind wings fulvous, rather paler on the discal 

 area ; a black bar about the middle of the costa and a round black 

 spot below it ; two small black spots in the cell, that nearest the 

 base obscure ; the black markings on the outer marginal area some- 



