26 BULLETIN 31, UNITED STATES NATIONAL MUSEUM. 



inner side near the base obscurely red. Face black pilose, above (ex- 

 cept the sides) white pilose. Occiput briefly white pilose, posterior 

 margin of the eyes black ciliate ; pile of abdomen black, very short ; on 

 first segment, and lateral margins of each segment, except the anterior 

 angles and the usual metallic spots, with white and longer i)ile. Hypo- 

 pygium short. Legs black ; the extreme base of the hind tibiae, and 

 the basal half of the front pair, luteous ; front tarsi fuscous, tip of the 

 first joint, and second joint, luteous, last two joints fuscous black j hind 

 inetatarsi strongly thickened, black, the extreme tip luteous, the two 

 following joints luteous, last two with the tip of the preceding black; 

 hind tibii.e clothed with rather long white pile above. Wings, except 

 the basal third, cinerescent ; stigma subfuscous, the last section of the 

 fourth vein broken in an angle. — Translation, compared with the type 

 specimen. 



Fipiza fraudulenta. 



Pip\:a frauduUnia, Loew, Centiir., vi, 41. 



Habitat. — Illinois (Lw.) ! 



$ . Black-bronze, with white pile, frontal triangle and the face black 

 pilose ; antennse black. Legs black ; the knees, base of front tibiae, 

 first three joints of the middle tarsi and the intermediate joints of the 

 other tarsi luteous, hind metatarsi strongly incrassate ; wings, except 

 the basal third, cinerescent, last section of the fourth vein bent, not au- 

 gulated. Length of body G.5""" ; of wings G'"'". 



Very similar to P. nigribarba, but the antennae are wholly black, the 

 hind tibiiE with long black, not white, pile above, and the hist section 

 of the fourtli vein is bent, not broken into an angle. 



Type specimen compared. I doubt the validity of this species. 



Pipiza femoralis. 



Fipiza femoralls Loew Centur., vi, 38. 



H^ipiza radicum Eiloy, 1st Rep., 121, lig. 66 ; Amer. Ent., i, 83. 



Habitat. — Illinois (Lw.) Pennsylvania !. 



S . Bronze-black, pallidly pilose, fascia of the second abdominal seg- 

 ment narrowly interrupted ; tip of femora, the tibiae and tarsi, luteous, 

 the tip of the latter more obscure ; wings cinereous hyaline, stigma dark 

 ochraceous. Length 8"^'" ; of wings 7,5"'"'. 



Bronze black, moderately shining, pallidly pilose. Eyes briefly white 

 pilose ; face white pilose. Antennie rather large, two basal joints red- 

 dish ochraceous, third black, near the base obscurely red ; arista black, 

 pallid near the base. The luteous fascia of the second abdominal seg- 

 ment broad and moderately" arcuated, divided by a black line, and 

 separated from the lateral margin by a black border. Pile of the abdo- 

 men short, pallid, near the base of the abdomen longer and white, be- 

 tween the yellow fascia and the i^osterior margin of the second segment, 

 black. Femora, except the luteous tip, bronze-black ; tibiae luteous, 

 the hind pair near the tip obsoletely annulate with fuscous ; tarsi lute- 



