74 PROCEEDINGS OF THE NATIONAL MUSEUM vol.74 



dusky testaceous, coxae and femora almost entirely fuscous. Winers 

 conspicuously yellowish hyaline, veins brownish yellow, paler at 

 bases. Knob^ of halteres yellow. 



Frons about as loner as width at vertex, sli<,ditly narrowed an- 

 teriorly, bare except for the bristles, the latter all stronj^, anterior 

 ol-bitals a little shorter than the ocellars; arista plumose, about as 

 long haired below as above ; face slightly and evenly convex. Thorax 

 with three pairs of strong postsutural dorsocentrals, the anterior 

 pair just behind suture, and four or five pairs of shorter strong 

 acrostichals, the anterior pair at, or close to, suture; anterior stemo- 

 pleural distinct. Abdomen robust, tergites with distinct apical 

 bristles; hypopygium not large. Fore femur with fine preapical 

 anteroventral comb; mid tibia with one long and two shorter apical 

 ventral bristles; no outstanding ventral bristles on mid and hind 

 femora. Inner cross vein a little before middle of discal cell; apical 

 sections of veins 3 and 4 parallel; that of the latter about 1.5 as long 

 as its penultimate section. 



Type.— Cat. No. 41151, U.S.N.M. Mount Maquiling, Luzon (C. F. 

 Baker). 



A robust species resembling those of the trispina group. 



HOMONEURA (IIOMONEURA) BILINEELLA (Frey) 



Mallocliomysa UUnella Frey, Acta, Soc. pro Fauna et Flora Fennica, vol. 56, 

 No. 8, p. 38, 1927. 



Male.—Shmmg testaceous yellow. Frons broadly dark broAvn in 

 center; facial orbits densely white dusted; third antennal segment 

 black except at base ; palpi' black at apices. Thoracic dorsum with 

 two narrow fuscous vittae between the series of dorso-centrals which 

 extend to hind margin of mesonotum and connect Avith a large bliick 

 spot on base of scutellum; notopleural suture dark. Abdomen and 

 legs unicolorous yellow. Wings grayish hyaline, outer cross vein 

 faintly clouded. 



Anterior orbitals about one-third as long as posterior pair, and a 

 little shorter than ocellars ; inner verticals over twice as long as outer 

 pair; arista long plumose. Thorax with three pairs of postsutural 

 doscocentrals, the anterior pair at suture, one pair of prescutellar 

 acrostichals, about eight series of intradorsocentral hairs, and the 

 anterior sternopleural short. Hypopygium as Figure 69. Fore 

 femur with an anteroventral comb; hind tibia without a preapical 

 dorsal bristle, the apical part of dorsum sharply ridged. Inner cross 

 vein at middle of discal cell; penultimate section of fourth vein fully 

 two-thirds as long as ultimate section. 

 Length, 3.5 mm. 

 Localiii/.—^iount ^laquiling. Luzon (C. F. Baker). 



