1278 Insects. 



but not closely punctured, all the segments have a white marginal 

 fascia. 



This species is much smaller than the rest, which alone would 

 serve to distinguish it ; in general appearance it most closely resem- 

 bles C. succincta, but it wants the rufo-fuscous margin of the first 

 segment of the abdomen ; and it is not so bright and shining, nor are 

 the fasciae white in the female. 



This bee I never captured. I have specimens of both sexes taken 

 by Mr. Samuel Stevens at Little Hampton, Sussex, and presented to 

 me by that gentleman. I have compared this species with the speci- 

 men in the Linnean cabinet, and find them identical. The male was 

 not previously known, nor have I seen any specimens excepting my 

 own, and the one referred to. 



Sp. 4. COLLETES DAVIESANA. 



Melitta Daviesana, Kirby, MSS. 



Female. — (Length 4 — 4|- lines). Black, the clypeus thinly clothed 

 with pale fulvous hair, gradually becoming darker towards the vertex ; 

 the thorax thinly clothed with fulvous hair above, beneath with white ; 

 the fringe on the femora, and also the thin pubescence on the tibia? 

 and tarsi similar. Abdomen very smooth and shining, and very finely 

 punctured, the basal segment rather more deeply, but more distantly 

 punctured, the margins of the segments have a pale ochraceous fascia ; 

 the first usually more or less obliterated. 



Male. — (Length 3 J to 4 lines). Black, the antennas nigro-piceous 

 beneath; the face densely clothed with pale fulvous hair, paler on 

 the clypeus; the thorax above clothed with fulvous, and beneath 

 with white hair ; the abdomen oblong, punctured, the margins of the 

 segments slightly depressed, and having a very pale ochraceous fas- 

 cia ; beneath, the fasciae do not continue along the margins of the seg- 

 ments, but curve upwards from the lateral margins, not uniting in the 

 centre. 



This species I think cannot be confounded with either of the 

 others : its black, glossy abdomen, so delicately punctured as not to be 

 observed without a lens, together with the interrupted fasciae, will 

 serve to distinguish it. 



The males of this genus may perhaps be found most difficult to 

 separate ; that of marginata is usually larger than the others, its 

 abdomen very convex, and its fascia) the most white and even, with 

 no pubescence between them. The male of fodiens has the abdo- 





