THE CANADIAN ENTOMOLOGIST. 355» 



morphological apex of sixth segment with four short dentiform 

 projections, the middle ones not quite so near to one another as 

 to the lateral, the margin between the middle ones convex. Almost 

 exactly like the male of M. cleomis Ckll., but differing in the 

 apex of sixth segment {cleomis has the middle teeth considerably 

 nearer to one another than to the lateral, and the margin 

 between them concave), and in having the densely granular 

 concave upper surface of sixth segment so feebly white-tomentose 

 that the tomentum is only visible in lateral view {cleomis has this 

 part densely tomentose) ; the hair of the face has a creamy tint,, 

 instead of being clear white as in cleomis. The lateral ocellus is a 

 trifle nearer to edge of vertex than to nearest eye. 



9. — Length, 11 mm.; mandibles 4-dentate, reddish apically;. 

 eyes light green, narrow; clypeus shining, closely punctured, its 

 lower margin straight, a transverse depression above the margin; 

 vertex with brown hair; abdomen with white hair-bands; sixth 

 segment sloping (not concave) in profile, with coarse black hair, 

 its apical third with very fine white tomentum; ventral scopa white, 

 entirely black on last two segments. Very like a small M. cleomis,. 

 but distinguished by the wholly black hair on last two ventral 

 segments, the narrower eyes, and the last dorsal abdominal segment 

 as described. Also near to M. generosa Cress., but considerably 

 smaller, and with the same distinctive characters as those separat- 

 ing it from cleomis. M. anograe Ckll., another similar species, is 

 at once separated by its brilliantly shining sixth abdominal segment,, 

 with coarse black hair to the apex. 



In Friese's table (Das Tierreich) the female runs nearest tO' 

 M. addenda, but Robertson describes addenda as having the margin; 

 of clypeus denticulate, while only the last ventral segment of abdo- 

 men has black hair. The male runs best to M. texana, i.e., Cres- 

 son' s male texana which appears to be cleomis. 



Hab. — Vernon, British Columbia (Miss Ricardo). The type 

 (male) taken July 7, 1902; the female, Aug. 18, 1902. This is^ 

 possibly to be considered a subspecies of M. generosa, but with the 

 evidence available it seems a distinct species. 



Megachile montivaga Cresçon. — d^, N. Ontario, Canada 

 (H. Edwards), 89-113. 



Megachile vidua Smith. — cT, British Columbia, 60-112. The 

 specimen is unusually large. 



Dianthidium pudens (Cresson). — Ç, British Columbia, 60— 

 112. Described from Nevada. 



Osmia novaescotiae, n. sp. — 9, Length, about 9 mm.; head 

 rather large, dark steel-blue, densely, punctured ; mesothorax and 

 scutellum more tinged with greenish but pleurae and metathorax 

 dark blue; abdomen short, broad-oval, shining steel-blue; hair of 



