FURTHER NOTES ON ANDRENA. 



89 



of our insect. The European A. ovina, Kirby (male), also 

 reminds one a little of A. perarmata. 



In the Mesilla Valley, New Mexico, I have taken a wild bee 

 (Halictus pruinosus) as early as March 18th, but it is quite the 

 end of March before the early Andrenidse are well on the wing. 

 Here we have A. perarmata appearing at Seattle, so much further 

 north, as early as March 15th, and in quantity ! 



Andrena ccerulea, Smith, var. nov. territa. 



? . Length about 9 mm. Differs from Smith's description of 

 car idea by the quite long erect pubescence of the head and thorax 

 being white, with some black hairs intermixed on the sides of the 

 metathorax, and especially at the sides of the face. The pubescence 

 of the legs is mostly sooty, but that on the anterior femora is entirely 

 white, and the floccus of the posterior femora is pallid. The greenish 

 fringe of the microscopically tessellate abdomen is quite marked, and 

 the whole insect is rather of a greenish blue. The wings are hyaline, 

 not noticeably darker at the apex, but throughout with a slightly dusky 

 tint. Nervures and stigma dark brown, stigma pallid in the middle. 

 There are no distinct hair-bands, but the sides of the abdomen show 

 some shining white hairs ; the venter exhibits three interrupted white 

 hair-bands ; the pubescence of the apex might be called obscure 

 fulvous ; it is a kind of pale reddish chocolate. Flagellum after the 

 third joint brownish beneath; clypeus tessellate, and with sparse 

 shallow punctures, its disc showing prismatic colours— purple, green, 

 and blue. Process of labrum broad and truncate. Mesothorax dull, 

 minutely roughened, with scarcely observable shallow punctures ; 

 basal enclosure of metathorax roughened, scarcely denned at all. 

 Tegulae dark chestnut colour, with some blackish hairs ; some blackish 

 hair also occurs on the sides of the prothorax. 



Hab. Olympia, Washington (T. Kincaid). May 23rd, 1894. 

 The following table separates the females of the blue Andrena of 

 the north-west : — 



Pubescence of apex of abdomen black, of face also 



black ....... nig roccer idea, Ckll. 



Pubescence of apex of abdomen brownish, of face 

 mostly pale. 

 Pubescence of thorax ochraceous, on metathorax 



black carulea, Sm., 1879. 



Pubescence of thorax white, the few black hairs 



inconspicuous territa, Ckll. 



Andrena rnelanochroa, n. sp. 

 2 • Hardly 7 mm. long, black, with short and thin dull whitish 

 pubescence, inclining to mouse-colour dorsally. Facial quadrangle 

 broader than long ; clypeus minutely tessellate, with sparse but strong 

 punctures ; vertex granular, front below ocelli very finely striate ; 

 antennae dark, feebly tinged with ferruginous beneath towards apex ; 

 first joint of flagellum as long as the two next together ; mandibles 

 stout with bifid dark ferruginous tips ; process of labrum broad, trim- 



