THE CANADIAN ENTOMOLOGIST. 321 



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Cheeks with black or sooty hair i. 



Cheeks with yellowish-white or grayish-white hair 2. 



1. Abdomen without hair-bands : middle of mesothorax strongly and 



closely punctured (E. States) cfiici, Rob. 



Abdomen with pale hair-bands on segments 3 and 4, and a line on 

 each side of 2 ; middle of mesothorax shining and rather sparsely 

 punctured (Oregon) despo?isiforfnis, Ckll. 



2. Dorsum of thorax with a good deal of black hair; inner orbits 



parallel (Colorado) mysops, Ckll. 



Dorsum of thorax without black hair ; inner orbits diverging above 



(Colorado) Glenwoodensis, Ckll." 



(Cockerell MS., April, 1905.) 



Melissodes microsticta, Ckll, n. sp — ■" ^ . Length about 8)^ mm.; 

 black, with abundant long and loose dull white hair, that of disc of thorax 

 purplish-black, and some of the same on vertex ; eyes light grayish-green ; 

 inner orbits converging below ; head not unusually broad ; mandibles 

 black, except a yellowish apical stripe; labrum black; clypeus light yellow, 

 with the upper part black, the yellow area quite twice as broad as high ; 

 antenna? long (about 7^ mm.) ; flagellum black above, the apical margins 

 of the joints very narrowly white ; below the flagellum is dark reddish- 

 brown, with a ferruginous dot on each joint except the first and last ; 

 mesothorax and scutellum shining, rather sparsely punctured, the middle 

 of mesothorax with an impunctate area, around which are scattered punc- 

 tures very irregularly arrayed ; tegulse shining dark reddish ; wings clear, 

 nervures dark fuscous ; second submarginal cell very broad, nearly 

 as broad as first, receiving the first recurrent nervure near its end ; third 

 submarginal cell broader (longer) than first, narrowed rather more than 

 one-half to marginal ; legs black, with pale pubescence, claw-joints 

 ferruginous ; hair on inner side of tarsi light orange ; hind spurs straight 

 and simple, yellowish-white ; abdomen small, black, hind margins of 

 segments broadly brownish, the extreme margins whitish; hair of abdomen 

 dull white, forming fairly distinct bands on hind margins of segments 

 (style of M. agilis), that on sixth segment and apex pale orange; the usual 

 four lateral spines present, but small. Allied to M. con/usa, Cresson. 

 " Hab. — Vancouver I. (Cresson collection.) " 



(Cockerell MS., April, 1905.) 



September, 1905. 



