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130 DIPTERA. 
This species bears some resemblance to Exorista elongata (anted, p. 65); but the 
apical cell ends nearer to the tip of the wing, the front is much narrower, and the body 
and legs are more densely pilose. 
2. Macquartia acuminata, sp. n., ¢ (22). 
‘Shining black ; thorax grey, with four black stripes; abdomen with six white reflecting spots ; ; eyes nearly 
contiguous towards the vertex; antennz and legs black; palpi rufous; wings with a brown tint on the 
costa and along the veins. 
Length 16 millim. 
In addition to its much larger size, this species differs from the preceding in its more distinct thoracic stripes 
_ and wholly black antennz and legs, and also in the white reflections on the abdomen, these being inter- 
rupted by a broad black dorsal band (thus. haying the appearance of quadrate lateral spots). The hairs of 
the underside of the abdomen are, without exception, black; the anal segment is compressed and pointed. 
(either seen from above or seen from the side); the tegule are dark grey, with a yellowish margin ; the 
brownish tint on the costa of the wings is more intense and extended, forming a shadow along the veins. 
Hab. Mzxico, Amula 7000 feet and Omilteme 8000 feet, both in Guerrero (H. H. 
Smith). 
Three male examples. The female specimens mentioned above (and which are from 
the same localities as the males) possibly belong to this species, as they have the wings 
infuscated nearly in the same manner, and the stripes on the thorax very distinct. 
They are, however, of a much smaller size (9°5 millim.); the head is whitish, but not 
silvery, the front nearly as broad as the eyes, the frontal band deep black; the abdomen 
much shorter, and the white front borders of the segments not so sharply limited. 
3. Macquartia venusta, sp. n., ¢. 
Shining black; thorax anteriorly and laterally with white reflections; second and following abdominal 
segments with white front borders; front narrowed behind, but separating the eyes; antenne and legs 
black; palpi rufous; wings with a brownish tint along the costa. 
Length 12 millim. 
This species is closely allied to M. setiventris and M. acuminata, and, in size, it is intermediate between them ; 
it may, however, be easily recognized from either by the eyes being distinctly separated. The abdomen is 
of the same elongate-conical shape, but the anal segment is somewhat truncate at the tip, and less pointed ; 
the frontal band is velvety-brown, narrowed behind; the face, cheeks, and sides of the front are more pure 
white, somewhat silvery; the basal joints of the antenne seem to have a tendency to become rufous; the 
whitish tomentum anteriorly on the thoracic dorsum is interrupted by four black stripes (which, however 
are less distinct than in M. acuminata); the tegule are white; the wings have only a dilute brownish tint 
along the costa. 
Hab. Mexico, Amula 6000 feet and Xucumanatlan 7000 feet, both in Guerrero 
(H. H. Smith). 
Several male specimens. 
4. Macquartia versicolor, sp. n.,¢. 
Front narrowed behind, but separating the eyes; thorax with four black stripes ; abdomen ovate, testaceous, 
with blackish and ochraceous reflecting spots; antenne and palpi rufous; legs black, sometimes partly 
dark rufous. 
Length 6°5-10-5 millim. 
