xii, D, 3 Bezzi: Studies in Philippine Diptera, II 145 



Female. — Length of body, 4 millimeters ; of wing, 4. Head as 

 in P. tristis, but the frons narrower and more elongate, being 

 about twice as long as broad, and black with a narrow yellow 

 vertical band; a broader yellow supra-antennal band; and two 

 yellow spots before the middle. Yellow lower borders of eyes 

 broader; face with only two black spots at end of the antennal 

 grooves; third antennal joint entirely yellow; feathers of the 

 arista twice as broad as the third antennal joint; prselabrum 

 yellow; palpi black. Mesonotum and scutellum shining black, 

 punctulate, with short black pubescence; humeral calli yellow, 

 like a notopleural stripe extending to the root of wings; pleura 

 altogether shining black and black-haired. Halteres yellowish. 



Abdomen entirely shining black, even on the base of the ovi- 

 positor, smooth; ovipositor black, depressed. Legs black, but 

 the hind tibiae almost entirely yellowish, without differently 

 colored ring ; tarsi whitish, with blackish ends. 



Wings as in P. tristis, but the dark spots of the basal less 

 numerous and with a distinct basal band before the anterior 

 cross vein; fuscous border of the hind cross vein broader; the 

 spots in the hyaline apical part less developed. Anterior cross 

 vein a little beyond middle of the discoidal cell; anal cell much 

 shorter than the second basal cell ; cross vein at end of the second 

 basal cell shorter than the second section of the fifth vein, 

 which makes its lower border. 



Mindanao, Butuan {Baker). 



187. Pterogenia laticeps sp. nov. 



A robust species, which in the form of head and in general 

 aspect is very like P. dayak and P. valida, but differs very much 

 in coloration of body, legs, and wings; in the shape of the 

 second abdominal tergite it shows an affinity with the Bornean 

 P. alhovittata Rondani. 



Female. — Length of body, 7 millimeters ; of wing, 6.5 ; breadth 

 of body, 3. Head broader than high, yellow with black markings. 

 Occiput above with a black transverse band between vertex and 

 neck; frons broader than eye, as long as broad, with two black 

 parallel crossbands, the broader one situated near the vertex 

 and including the ocelli, the other narrower and placed distad 

 of the middle, united to the preceding band by a black middle 

 stripe; the short frontal pubescence black, like the single pair 

 of vertical bristles; lunula shining black, frons opaque. Face 

 broad, entirely dull yellow, a broad black spot, shining in the 

 middle, just below the lunula and forming with it a single 

 rounded spot at the root of antennae; a narrow black semicir- 

 cular line, interrupted in the middle and dilated in a spot on 



