ART. 15 NOTES ON ACALYPTEATE FLIES MALLOCH 27 



PSEUDEPICAUSTA COMPLETA, new species 



Female. — Head fuscous, frons brownish, frontal orbits with dense 

 whitish dust, narrowed posteriorly, face testaceous yellow, darker in 

 the foveae, labrum and palpi concolorous with face; antennae 

 slightly darker than face, third segment brownish except at base; 

 aristae testaceous yellow; parafacials, cheeks, and postocular orbits, 

 densel}^ whitish gre}^ dusted. Thorax metallic blackish green, densely 

 grey dusted, the mesonotum with four black vittae, two on the dor- 

 socentral areas and two, less distinct, on the notopleural sutures; 

 scutellum grey dusted. Abdomen brighter metallic blue-green than 

 thorax, less densely grey dusted. Legs black. Wings hyaline, with 

 a deep black costal margin which extends to second vein on its en- 

 tire extent, inner outline leaving a short distance before apex of 

 that vein and running diagonally across wing to slightly behind 

 apex of fourth vein, the inner margin all sharply limited; veins 

 yellow basally, becoming darker apically except in the dark costal 

 area where they are entirely black. Calyptrae and halteres pale. 

 Hairs on frons, mesonotum, and most of the femora pale. 



Frons at vertex about one-third of the head width, not appreciably 

 widened anteriorly, with quite dense soft erect hairs, orbits con- 

 spicuously differentiated because of their dense whitish grey dusting, 

 each with two short bristles near upper extremity ; all four verticals 

 present; ocellars short but distinct; the orbital hairs descending a 

 little below the bases of antennae on parafacials; aristae distinctly 

 pubescent; antennae extending to below level of epistome; labrum 

 not as high as width of third antennal segment; palpi slightly 

 widened apically. Thorax with fine decumbent dorsal hairs; two 

 presutural bristles immediately behind head, the acrostichal pair 

 lacking, notopleural bristle sometimes very short and duplicated, the 

 mesopleural short; scutellum with four bristles. Abdomen without 

 black bristles on sides of first visible tergite. Legs of normal build, 

 fore femur with a series of posterodorsal and a partial series of pos- 

 teroventral bristles; hind tibia with three or four very fine setulae 

 centrally on antero ventral surface; third wing vein very slightly 

 bent down apically; outer cross vein at almost twice its own length 

 from inner. 



Length, 6.5-7 mm. 



Tj^pe and four paratypes. Cairns, N, Queensland, Australia (coll. 

 Lichtwardt, Deutsches Entomologisches Institut.). 



P«r«^y;?^.— Female, Cat. No. 43071, U.S.N.M. Deposited in the 

 collection of the United States National Museum through the kind- 

 ness of Dr. Walther Horn. 



PSEUDEPICAUSTA ATTENUATA, new species 



Female. — Very similar to the next preceding species, agreeing with 

 it in all respects except as follows : The scutellum has six marginal 



