94 AMERICAN DIPTKRA. 



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

 scutelluni piibesceut, except a bare strip in the middle; pleuise clav-yellow ; 

 mesopleura with numerous strong hairs; sternopleura besides the one strong 

 bristle with numeVous small hairs. 



Wings brownish ; costa, small and large cioss-veins, and aj)ices of the longitu- 

 dinal veins distinctly bordered with brown. 



Abdomen yellowish cinereous or totally cinereous; hyiiopygiuin of the male 

 brownish-yellow, rather small. 



Legs yellow, somewhat infuscated ; all the tibise with a brown band 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 female.'*, one male. U. S. N. M. : Las Vegas, N. M., Aug. 

 13th and 14th (H. S. Barber), labeled Helomyza tinda Walk. Aid- 

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



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

 National Museum. 



Species not Identified. 



fEeloniyza apiealis Loew. 



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

 tinctly bordered with browu, upper half of the pleura [mesopleura] with some 

 scattered minute pile, antennal arista with short pubescence. 



"Yellow, opaque, the color of the thorax and scutelluni vei'ging more into 

 latericious. Front brighter yellow. Antennae 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 biistles of the median part 

 surrounded at base with brownish dots a little larger. Scutelluni 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. I^egs lutes- 

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

 the tibise brown, tarsi black at tip. Witigs cinereous-hyaline, transverse veins 

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

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



Translation of original description. 



Helomyza tiiicta Walker. Female. 



"Body ferrugiiieous, 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 j)itchy ; facets small; sucker 

 jiitchy, clothed with tawny hairs; paljji tawny, beset with black bristles; feelers 

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

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

 legs ]iale ferrugineous, clothed with short black hairs; tijis of the shanks beset 

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

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

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



