ART. 6 NOTES OX ORIENTAL SAPEOMYZID FLIES MALLOCH 37 



middle, the thorax has four brownish vittae, the partial one being 

 absent, and the abdomen is without blackish apices to tergites. 



Length, 3 mm. 



Tyfe and one paratype. — Mount Maquiling, Luzon (C. F. Baker). 



2V/^e.— Female, Cat. No. 41600, U.S.N.M. 



An interesting character possessed by both species of this genus 

 is the short, but distinct, bristle on the outer side of basal antennrJ 

 segment near its lower margin. I have not cited this character in 

 the generic diagnosis as I have but two specimens of the genus and 

 it may not be constant. A similar bristle appears on the basal an- 

 tennal segment in Kerteszomyia^ but it is close to the upper margin of 

 the segment and is much shorter. A similar bristle occurs close to 

 lower margin of basal antennal segment in SaiUeromyia. There are 

 only the usual microscopic hairs present on basal segment in Trlgo- 

 riOmetopus and these are on upper side, which is also the case in 

 Trigonometopsis. 



Genus TRIGONOMETOPSIS Malloch 



This genus was erected for the reception of an Australian species, 

 hi/notata Macquart. There is one Philippine species which is refer- 

 able here. 



TRIGONOMETOPSIS PUNCTIPENNIS, new sp«cies 



Female. — Testaceous yellow, Ocellar sj^ot fuscous, frons with a 

 faint brownish central line, two brownish marks at anterior extremity 

 of each orbit, the smaller one between antenna and eye, parafacial 

 browned, face fuscous on upper half; arista pale at base, dark 

 apically. Dorsum of thorax darker than pleura, greasy in the type 

 but with evident traces of four or six brownish vittae and the lateral 

 margins brown, the scutellum with a brown vitta on each side on 

 disk. Apices of tergites narrowly infuscated. Legs yellow. Wings 

 hyaline, brown along costa at base to apex of first vein and with 

 numerous brown spots beyond that point and on disk, four in mar- 

 ginal cell, the last one in apex, the first two more or less evidently 

 subdivided, about nine in siibmarginal cell, five or six in first posterior 

 cell, the basal one on the inner cross vein, the one at apex faint, 

 and four in second po3terior cell, the inner one over outer cross vein. 

 Halteres yellow. 



Frons about 1.5 as long as wide, with fine surface hairs, most 

 numerous anteriorly ; ocellars small ; postverticals below vertex ; inner 

 verticals longest; anterior orbitals backwardly curved, shorter than 

 posterior pair ; frons in profile slightly projecting ; face receding be- 

 low middle, with a slight central carina above; eye about 1.25 as 

 long as high ; cheek longitudinally convex in middle, the bristles not 

 on lower margin of cheek but along lower side of convexity, not 



