SOUTH AMERICAN DIPTERA. 277 



Two specimens, Chapada. This species does not agree wholly 

 with Macquart's description, but I think it is the same. All the 

 tibiae are " herissees de poils," and the figure of the legs is not at all 

 correct. Bigot placed this species in the genus Phalacromijia, for 

 what reason I do not know, as he seems to have been unacquainted 

 with it. Plial. vicina Bigot he believes to be nearly allied, from the 

 pilosity of the hind tibiis, though it has the scutellum normal. Phal. 

 melanorrhbia Bigot seems to have a similar frontal tubercle. Espe- 

 cially characteristic of the genus is the peculiar style of ocular 

 pilosity. 



60. Apopliysophora »«eutellata n. sp. 



9 . — Length 5 — 6 mm. Auteniue reddish brown, or reddish black ; the arista 

 yellow, long and loosely plumose. Face pitchy black, sparsely light yellow pilose, 

 with whitish pollen below the antennae ; tubercle obscurely yellowish ; the cheeks 

 in front with a yellow or luteous stripe to the oral margin. Front shining black, 

 vertical tubercle very prominent, sharply conical; median tubercle small, but 

 very distinct, rounded. Mesonotum metallic bronze black, with light yellow 

 pile, and, across the middle, black pile. Scutellum wholly translucent, light 

 amber yellow ; large, swollen, as long as wide, obtusely triangular in side view, 

 at the base projecting directly upwards to a level with the top of the dorsum, 

 forming three rounded tubercles, shallowly separated, the middle one the most 

 prominent. Abdomen pitchy black, shining, the first segment and the base of 

 the second yellow. Legs black pitchy, the tai'si yellow; all the femora and 

 tibise short ciliate with black pile ; hind tibiaj moderately arcuated and dilated. 

 Wings nearly hyaline on the basal posterior part, in front yellow or yellowish ; 

 from beyond the anterior cross-vein infuscated, brown in front ; marginal cell 

 wide open. 



% . — Oeellar tubercle and frontal triangle moderately swollen, shining green. 

 Abdomen more reddish, the second segment with two opaque black spots. 



Twelve female and two male specimens, Chapada. 



ERISTAI.IS. 



TABLE OF SPECIES. 



Arista bare ; eyes pilose ; hind femora thickened. 



1. Dorsum of thorax with one or more ashy or shining transverse bands 2. 



Dorsum uniform in color, or with longitudinal stripes 13. 



2. A complete transverse band in front of the scutellum 6. 



Dorsum opaque black in front of the scutellum 3. 



3. Presutural ashy band distinctly interrupted .sp. 



Presutural band entire 4. 



4. Marginal cell distinctly widened before its tip (i. e. the second vein has a 



slight, but distinct curvature backward before its end) ; no gray clouds in 



the marginal and submargiual cells albirrous. 



Marginal cell regular, second vein not curved before its end 5. 



