96 AMERICAN DIPTKRA. 



Helomyza iiiieiis Giglio-Tos. 



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

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

 raceous, dotted with brown ; pleura pale yellow; scutelluni ochiaceous, with two 

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

 legs in the male stout and hairy ; bases and apices of the tibiae 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 tibi^ with a black ring near the 

 l)ase ; apices of all the tibiae and 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, v/hich 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 piin<;tulata Van der Wulp. 



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

 blackish at the costa and tip. 



" Length 5 mm. 



''Front broader than tiie eyes, orange-rnfous ; face, cheeks and occiput jiale 

 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 ou the face — one in the middle aud two on the sides of the oral margin, 

 these latter bearing the vibrissse; 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 

 ])ale rufous; palpi black, at least at the tip. Thorax and scntellum reddish tes- 

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

 baud from the shoulders to below the base of the wings; pleurse and metanotum 

 pale rufous; thorax laterally with several bristles; scntellum 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 tibiic with weak bristles. Halteres rufous. Wings with 

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

 ish border, whi(;h becomes broader outwards and extends round the tii> of the 

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

 ing species [iniens]. 



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

 Smith)." 



