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404 



Say^s Descriptions of 



lowish hair : hypostoma and labrum yellow : antenna, 

 excepting the basal joint, beneath piceous : mandibles 

 yellow at base, with a piceous spot^ honey-yellow in the 

 middle and blackish at tip: i^?ik^5 slightly fuliginous; 

 nervures dusky : iergnm^ first segment at base, with hair 

 as on the thorax ; second segment with a broad basal 

 margin of whitish prostrate hair, and a narrow oblique 

 one on the middle ; third and fourth segments with oblique 

 bands of the same color on their middles ; fifth with the 



mtermixe 



hairs. 



^ 



Length nearly three fifths of an inch. 



I have numerous specimens, all of which are males. 



The hair of the head and thorax is slightly tinted with 

 ferruginous. - 



2. M. hinotdia. 

 Inhab. Indiana. 



Black ; wings blackish. 



and 



with short hair, that of the occiput and behind the scute! 

 a little longer : lalrum with prostrate hair : wings black- 

 ish violaceous : tergum on some parts, with a slight 

 purplish reflection ; fourth segment with a transverse- 

 quadrate, white spot of prostrate hair on each side, upon 

 its posterior margin : posterior tibi<B and tarsi, with th«! 

 long hairs whitish. 



Length about nine twentieths of an inch. 

 ' $ A little smaller than the female ; nasus and labrum 

 pale yellow ; antennae beneath, dirty yellowish ; wings 

 not so dark as In the female ; tergum immaculate. 



Although it has some points of specific similarity with 

 the preceding, yet it differs so widely from it in other 

 respects, that with much hesitation, I have concluded to 

 give it a distinct place. 



V 



