352 DIPTERA. 
1. Helomyza iniens. (Tab. IX. fig. 3, ¢.) 
Helomyza iniens, Gig].-Tos, Mem. R. Accad. Scienze di Torino, ser. 2, xlv. (sep.) p. 35, figg. 9,10°. 
Hab. Mextco!, Amula 6000 feet, Omilteme 8000 feet, and Sierra de las Aguas 
Escondidas 9500 feet, all in Guerrero (H. H. Smith). 
A long series of specimens of both sexes. The complete and clear description of 
Dr. Giglio-Tos leaves no doubt about the determination. He describes the wings as 
“intensemente brune longo tutta la costa”; but, as represented in his figure, the 
brown border of the costa is wanting at the base and interrupted again before the end 
of the second vein. The T-like mark on the wings is very striking and gives a peculiar 
aspect to this interesting fly. 
The Guerrero specimens vary in length from 7-9 millim.; two of them (females) 
measure no more than 5°5 millim. 
2. Helomyza punctulata, sp.n. ¢ 9. (Tab. IX. fig. 4, wing.) 
Testaceous ; head and legs rufous; front and face with black dots; wings blackish at the costa and tip. 
Length 5 millim. ; 
Front broader than the eyes, orange-rufous; face, 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 
antenne ; three similar points on the face—one in the middle and two on the sides of the oral margin, 
these latter bearing the vibrisse ; the face with a narrow silvery-white lateral margin ; on the occiput is 
a central black spot, on each side with a white border. Antenne rufous; third joint ovate ; arista black, 
distinctly plumose. Proboscis pale rufous; palpi black, at least at the tip. Thorax and scutellum 
reddish-testaceous ; thoracic dorsum with more or less distinct brown stripes ; a blackish band from the 
shoulders to below the base of the wings; pleure and metanotum 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 tibie with weak bristles. Halteres rufous. Wings with short spines along 
the costa; from the end of the first vein the costa has a blackish 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 
preceding species. 
Hab. Mexico, Omilteme in Guerrero 8000 feet (H. H. Smith). 
Several specimens of both sexes. 
3. Helomyza distigma, sp.n., ¢ @. (Tab. IX. fig. 5, wing.) 
Rufo-testaceous ; antennsz and legs rufous; two rounded spots in the first posterior cell, in addition to the 
other blackish markings on the wings. 
Length 5-7 millim. 
Male. Head pale rufous; front much broader than the eyes; ocellar point shining brown, emitting two 
bristles, which are curved forwards; exterior to these are two other bristles and on each side of the 
vertex a pair of post-vertical bristles; face and cheeks broad; two weak vibrisse at the oral margin. 
Antenne rufous, short; third joint rounded; arista black, nearly bare. Proboscis and palpi rufous. 
Thorax and scutellum testaceous; thoracic dorsum. with numerous hair-points ; pleure with a brown 
stripe from the shoulders to beneath the base of’ the wings ; the sides of the thorax with some bristles ; 
scutellum with four bristles—one on each side and two at the hind margin; metanotum rufous. Abdomen 
greyish-brown, the anal segment globular and more rufous; the segments with some marginal and 
