PHILIPPINE DIPTERA, II 43 



first basal cell and over the ends of the second basal and anal 

 cells; a second rather broad brown band begins below the 

 brown stigma and, passing over the anterior cross vein, ends 

 a little after the fifth vein; along the costal border a series of 

 three dark spots in the form of three abbreviated bands, which 

 surpass only a little the third vein and are placed at the ends of 

 the first, second, and third veins; the intermediate one of these 

 spots sometimes continued to reach the more or less developed 

 fuscous border of the hind cross vein. Anterior cross vein long, 

 placed a little before the middle of the discoidal cell; third and 

 fourth veins straight and perfectly parallel; anal cell a little 

 shorter than second basal cell, its terminal vein being slightly 

 curved outward. 



LUZON, Laguna, Los Bafios (Baker). MINDANAO, Butuan 

 (Baker). 



185. Pterogenia tristis sp. nov. 



Very near P. luctuosa Hendel from Formosa, but at once dis- 

 tinguished by the much richer wing pattern. 



Male and female. Length of body, 5 millimeters; of wing, 5. 

 Head as in P. valida, but the frons distinctly narrower, and the 

 vertical diameter longer than the horizontal one, the jowls nar- 

 rower. Frons yellow, with two black crossbands, one near the 

 vertex including the ocelli and the other a little distad of the 

 middle ; these two bands dilated on the sides in the form of 

 spots and united with a dark middle line ; cheeks yellow and very 

 narrow. Face yellow, with a black middle spot, another smaller 

 spot on each side below the black spot, and a narrow black line 

 at mouth border; jowls only one third of eye, black, with a 

 yellow spot near the eye ; lower orbital border not dilated, black, 

 with more or less extensive yellow spots. Antennae much shorter 

 than the face, black at base; third joint yellowish, with infus- 

 cated apical half; arista more shortly plumose than in P. nivei- 

 tarsis, but longer than in P. luctuosa, the breadth of feathers 

 being almost equal to the breadth of the third joint. Prselabrum 

 narrow and blackish; palpi yellowish, black-haired; proboscis 

 brown. 



Mesonotum and scutellum entirely black, opaque, punctulate, 

 with short black pubescence; dorsum in front with three less 

 distinct longitudinal gray stripes. Mesopleura with a narrow, 

 less distinct, longitudinal yellowish stripe. All the bristles 

 black; scutellum with a single, long, apical pair, and near this 

 four or five other pairs of much shorter bristles. Squamae 

 whitish, with pale yellowish border ; halteres yellowish. 



