144 The Philippine Journal of Science 1917 



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. Antennse 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. 



Abdomen shining black, smooth; second, third, and fourth 

 segments in the male with a narrow yellow hind border, a 

 little dilated toward the middle; male genitalia black. In the 

 female the abdomen entirely black, at end only with a broad 

 yellowish membranous patch at base of the ovipositor; the last 

 with the basal segment depressed, black. Legs black, even on 

 the coxse; the four posterior tibiae with a middle yellowish ring 

 and yellowish bases, all the tarsi whitish, with blackish ends. 



Wings with numerous dark spots on the basal half, a broad, 

 middle brown band from stigma to the hind border interrupted 

 on lower half by hyaline spots, and a broad, complete brown 

 band from apex of the marginal cell to the middle of the hind 

 border of the second posterior cell ; in the hyaline space between 

 these two bands a series of spots forming a narrow, irregular 

 band united with the narrow fuscous border of the hind cross 

 vein ; in the hyaline apical part of wing there are also three or 

 four dark spots, forming one or two irregular and shortened 

 bands. First posterior cell distinctly dilated outward; anterior 

 cross vein on the middle of the discoidal cell; anal cell much 

 shorter than the second basal cell, with the terminal vein 

 straight. 



Luzon, Laguna, Mount Maquiling (Baker) . 



186. Pterogenia parva sp. nov. 



Closely allied to P. tristis, but distinguished by the yellow noto- 

 pleural stripe, the shining dorsum of mesonotum, and the longer 

 plumose arista. 



