Kahl: The Dipterous Genus Leucophenga Mik. 373 



section of the costa, runs in a slightly convex curve to the middle of first posterior 

 cell, then in a gentle convex curve to the fifth vein, where the outline runs a little 

 inwards and across the fifth vein to its apex; the posterior cross-vein is equally 

 surrounded on each side by the posterior portion of this band. 



The third longitudinal vein ends in the very apex of the distinctly pointed wing; 

 second vein curves gently and distinctly on its apical half; the distance between the 

 tips of the second and third veins at least two and a half times the distance between 

 the tips of third and fourth veins, which are almost parallel in their apical portion; 

 first posterior cell slightly wider at the middle than at apex (a usual occurrence in 

 DrosophilincB); the distance between anterior and posterior cross-veins is one half 

 longer than the first section of the third vein; the posterior cross-vein about the 

 length of, or slightly longer than, the ultimate section of fifth vein; anal vein strong, 

 straight, stops almost abruptly, reaching about halfway towards the posterior mar- 

 gin of the wing; veins black, the thinned apical portion of fourth vein yellowish, and 

 the fifth vein through the hyaline part appears reddish yellow. 



The fronto-orbital, vertical, and ocellar bristles of almost equal size; the upper 

 reclinate fronto-orbital is distinctly nearer to the inner vertical than to the lower 

 reclinate, and only slightly higher up than the lower ocellus; the uppermost pair of 

 the occipito-orbital fringe of setulae lengthened, appearing as a small pair of diverg- 

 ing posterior verticals; the postverticals minute, but distinct and very slightly 

 converging; a small seta near the eye on the lower occipital orbit distinctly differen- 

 tiated from the setulae of the orbital fringe; between the two sternopleural bristles 

 is seen a very minute setula; the anterior dorso-central bristle is much shorter and 

 weaker than the posterior one, and of the size of the prescutellar pair, which is 

 situated distinctly nearer the scutellum than the strong posterior dorso-central 

 bristle, and the distance between the prescutellars is distinctly less than the distance 

 between either of them and the nearest posterior dorso-central; the four scutellar 

 bristles, of the same strength as the posterior dorso-central, with the apical ones 

 converging and with the lateral ones a little longer, diverging; the posterior postalar 

 minute, but distinct; the anterior supra-alar and the presutural of same size, small, 

 but distinctly differentiated from the setulae of mesonotum. All bristles black. 



Habitat: Brazil, Santarem, icf, Col!. H. H. Smith, Carn. Mus. Ace. 

 2966. Type in Carnegie Museum, Pittsburgh. 



2. Leucophenga brunneipennis sp. nov. 



Diagnosis: Head yellow with upper occiput mostly blackish; palpi 

 black. Mesonotum and scutellum dark brown-red; legs yellow. Ab- 

 domen with dorsum black. Wings anteriorly dark brown, fuscous 

 posteriorly; posterior cross-vein broadly surrounded by dark brown; 

 second vein straight to costa. Length 3 mm. or a little less. 



Description: Head with front reddish yellow, somewhat brownish at vertical 

 portion and with the orbital stripes concolorous with the rest of front, which is 

 rather narrow, less than one-third the width of head, of equal width of the face from 

 the oral vibrissae to the upper reclinate fronto-orbital bristle; lower occiput pale 



ANN. CARN. MUS., XI, 2$, OCT. 27, I917. 



