Records of Bees. 123 



Osmia Edncc, sp. n. 



? . — Length about 7 mm. 



Very brilliant golden-greenj a little reddish on second 

 abdominal segment; hair of head and thorax above long, pale 

 ochraceous, with no dark hairs intermixed ; on cljpeus the 

 hair is yellowish white ; flagellum ferruginous beneath, not 

 nioniliform ; mesothorax densely rugoso-punctate ; tegulaj 

 brilliant green. Wings dusky hyaline. Legs green, with 

 yellowish-white hair ; hind femora almost black behind. 

 Abdomen subglobose, with the hair entirely pale yellowish or 

 yellowish lohite ; sixtii segment with a minute feeble notch ; 

 seventh strongly notched rather than bidentate. 



Hah. Campus of University of Colorado, Boulder, Colorado, 

 at flowers of Taraxacum taraxacum, May 9, 1907 [Miss Edna 

 Baker). 



The following table separates this species from some other 

 bright green males : — 



Posterior part of abdomen dorsally with some or 

 much black hair ; size larger 1. 



Posterior part of abdomen dorsally with wholly lig-ht 

 hair ; size smaller 2. 



1. Hair of thorax above with some dark hairs inter- 



mixed bclla, Cresson. 



Hair of thorax above without dark hairs intermixed. Bermettce, Ckll. 



2. Size smaller; pubescence white; abdomen dullish, 



not shining golden (/audiosa, Ckll. 



Size larger ; pubescence very yellow ; abdomen 



brilliant, shining golden Educe, Ckll. 



Osmia leonis, sp. n. 



? . — Length about 11^ mm. 



Head and thorax partly dark green, partly black ; abdomen 

 shining dark blue ; legs black ; ventral scopa black ; cheeks 

 normal. Head ordinary, with large strong punctures ; man- 

 dibles tridentate, the apical tooth long and falciform, the 

 second triangular and sharp, the third a long undulating 

 ridge; anterior part of clypeus purple-black, this colour 

 extending also up the middle ; edge of clypeus straight, but 

 at the middle next to the edge there is a transversely oval 

 shining jnt of quite large size ; supraclypeal region with a 

 shining green mark like an inverted V ; antennas entirely 

 black, comparatively short. Hair of clypeus, lower sides of 

 face, and cheeks black ; of front black and pale ochreous 

 mixed ; of vertex mostly black, but of occiput pale ochreous, 

 extending forward over ocelli j hair of pleura black, but of 



