96 AMERICAN DIPTKRA. 



Helomyza iniens Giglio-Tos. 



" Yellowisli-testaceoiis; the face pale yellow, third antennal joint almost cir- 

 cular, black at base and on the upper margin ; arista long, plumose; thorax och- 

 raceous, dotted with brown; pleura pale yellow; scutellum ochraceous, with two 

 brown vittffi and four bristles; abdominal segments bordered with brown behind ; 

 legs in the male stout and hairy ; bases and apices of the tibise annulate with 

 black ; tarsi black at apex ; wings yellowish, costa with spinules, the front mar- 

 gin, transverse veins and apex of the fourth longitudinal vein brown. Length 

 9 mm." 



Translation of original description. The type locality was sim- 

 ply Mexico. In his later description Giglio-Tos adds that there is 

 a black spot each side of the ocellar spot; plumosity of the arista 

 medium; pleura with a brownish stripe; all the femora with an 

 apical brown spot above ; hind tibiae with a black ring near the 

 base; apices of all the tibitieand last four joints of all the tarsi black. 



Van der Wulp, in his Biologia reference, calls attention to a few 

 points. The most striking character is the infuscation upon the 

 hind cross vein, which extends both ways along the fourth vein, so 

 as to make a T-shaped mark. The original description does not 

 correctly describe the apex of the wing ; it is infuscated to the tip of 

 the fourth vein. Van der Wulp had numerous specimens from 

 Guerrero, a State of Southern Mexico. 



Helomyza piinctulata Van der Wulp. 



"Testaceous; head and legs rufous; front and face with black dots; wings 

 blackish at the costa and tip. 



"Length 5 mm. 



"Front broader than the eyes, orange-rufous ; fare, cheeks and occiput pale 

 rufous; ocellar knob black; two black dots near the vertex next the eyes and 

 two smaller ones between the eyes and the root of the antennae; three similar 

 points on the face — one in the middle and two on the sides of the oral margin, 

 these latter bearing the vibrissie; face with a narrow silver-white lateral mar- 

 gin; on the occiput is a central black spot, on each side with a white border. 

 Antennae rufous; third joint ovate ; arista black, distinctly plumose. Proboscis 

 pale rufous; palpi black, at least at the tip. Thorax and scutellum reddish tes- 

 taceous; thoracic dorsum with more or less distinct brown stripes; a blackish 

 band from the shoulders to below the base of the wings; pleurse and metauotum 

 pale rufous; thorax laterally with several bristles; scutellum with four bristles. 

 Abdomen rufous, the segments with blackish hind borders and marginal bristles. 

 Legs pale rufous, the tarsi towards the end and the tip of the hind femora 

 blackish ; femora and tibise with weak bristles. Halteres rufous. Wings with 

 short spines along the costa ; from the end of the first vein the costa has a black- 

 ish border, which becomes broader outwards and extends round the tip of the 

 wing; the cross-veins are covered by blackish spots; venation as in the preced- 

 ing species [iniens]. 



"Habitat. Mexico, Omilteme in Guerrero, 8000 ft. (H. H. 



Smith)." 



