94 AMERICAN DIPTKRA. 



the darker specimens a central brown stripe runs the full length of the thorax ; 

 scutelliini pubescent, except a bare strip in the middle; pleuise clay-yellow; 

 mesopleura with numerous strong hairs; sternopleura besides the one strong 

 bristle with numerous small hairs. 



Wings brownish ; costa, small and large cross-veins, and apices of the longitu- 

 dinal veins distinctly bordered witli brown. 



Abdomen yellowish cinereous or totally cinereous; hypopygium of the male 

 brownish-yellow, rather small. 



Legs yellow, somewhat infuscated ; all the tibige with a brown baud at the 

 distal end, and the hind tibise with an additional one near the base, these rings 

 when feebly developed sometimes appearing as spots on the outer side ; last two 

 joints of the tarsi black; pulvilli white and rather conspicuous. 



Three females, one male. U. S. N". M. : Las Vegas, N. M., Aug. 

 13tli and 14th (H. S. Barber), labeled Helomijza tineta Walk. Aid- 

 rich : Custer, So. Dakota. Cooley : Missoula, Montana, May 28th. 



The type is a male from Las Vegas, and will be returned to the 

 National Museum. 



Species not Identified. 

 Heloniyza apical is Loew. 



"Yellow, the transverse veins and the apices of the longitudinal ones dis- 

 tinctly bordered with brown, upper half of the pleura [mesopleura] with scmie 

 scattered minute pile, antennal arista with short pubescence. 



"Yellow, opaque, the color of the thorax and scutellum verging more into 

 latericious. Front brighter yellow. Anteunse almost fulvous, the third joint 

 ovate, arista with short pubescence. Eyes rather large, roundish ; the cheeks of 

 medium width; one vibrissa on each side, of medium size. Dorsum of the 

 thorax sprinkled with very minute brown dots, the bristles of the median part 

 surrounded at base with brownish dots a little larger. Scutellum bare except at 

 the sides. Pleura with a faint stripe, the upper half bearing some minute pile. 

 Hind margin of each abdominal segment bordered with blackish. Legs lutes- 

 cent, the apices of the hind femora and bases of all the tarsi brownish, apices of 

 the tibiae brown, tarsi black at tip. Wings cinereous-hyaline, transverse veins 

 and apices of the longitudinal ones distinctly bordered with brown, costal bris- 

 tles of medium size. — (District Columbia ; Osten Sackeu)." 



Translation of original description. 



Helomyza tineta Walker. Female. 



"Body ferrugineous, clothed with short, black hairs; head and chest beset 

 with a few black bristles; head with a hoary tinge behind; sides of the face 

 without bristles; epistoma not prominent; eyes pitchy; facets small; sucker 

 pitchy, clothed with tawny hairs; palpi tawny, beset with black bristles; feeleis 

 tawny at base; abdomen linear, pitchy, a little narrower and very much longer 

 than the chest, tawny at the base, tapering towaid the tip, which is also tawny ; 

 legs i)ale ferrugineous, clothed with short black hairs; tips of the shanks beset 

 with black bristles; claws black, ferrugineous at the base; foot-cushions pale 

 tawny ; wings gray, tawny for some breadth beneath the fore border and among 

 the veins in the disk; wiug-ribs and veins tawny; longitudinal veins straight; 



