408 



Say^s Descriptions of 



,« 



4 



the edge has several small denticulations : anterior tarsi 

 simple : tarsi piceous at their tips. 



Length less than two fifths of an inch- 



9 AJ^ttle larger than the male ; with very little hair 

 on the front ; abdomen short conic-oval ; venter hairy. 



Length two fifths of an inch. 



The male of this species closely resembles that oi pug- 

 natusj so much so, that it might readily be considered as 

 the same ; but the anterior tarsi are not dilated, and the 

 abdomen, although similarly terminated, is remarkably 

 shorter. 



M. jpugndtiis. Black ; anterior tarsi dilated in the 

 male, with the first joint prolonged at its anterior angle 

 beyond the tip of the second joint. 



Inhab. Indiana. 



' I 



$ Body black, not densely hairy : head densely cov- 

 ered with long whitish hairs in front : thorax with whitish 

 hair, not concealing the surface : wings fuliginous, tinged 

 with violaceous ; venter longer than broad : tergum with 

 small, dense punctures ; and a narrow white band on each 

 segment; anal segment transversely concave, at its tip 

 emarginate in the middle, and on each side the edge has 

 several small denticulations : anterior farst whitish, dilated, 

 and ciliated ; anterior tip of the basal joint prolonged a 

 little beyond the tip of the second joint, and its whole 

 length excavated before ; anterior tip of the second joint 

 also prolonged almost to the tip of the third joint ; fourth 

 joint not dilated: anterior tibia with dilated crowded 

 punctures : anterior coxa^ each with a prominent, black 

 spine : intermediate and posterior tarsi piceous at tip. 



Length over two fifths to nearly half an inch. • 



9 Frontal hair shorter and less conspicuous ; anterior 

 feet simple ; venter with dense yellow hair. 



Lengh over half an inch. 



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