140 The Philippine Journal of Science 1917 



182. Zygsenula paradoxa Dol. 1858. 



Mount Banahao, Luzon, and Butuan, Mindanao. A very 

 curious fly, new for the Philippines, and previously known only 

 from Amboina. The body is almost quadrate; the present 

 specimens measure 5 to 5.5 millimeters in length and 3.6 to 4 

 millimeters in breadth. The species seems to be variable in 

 coloration ; in some specimens the entire occiput is black, while 

 in others it is wholly reddish; the legs have the femora partly 

 or entirely reddish yellow, or the four posterior femora are black 

 on the basal half ; the ovipositor is sometimes black, with bluish 

 base. 



183. Naupoda unifasciata sp. nov. 



A small species, closely allied to N. contracta Hendel, from 

 Formosa, and different from the typical endemic species N. 

 platessa, besides the very different coloration, in having a pair 

 of frontoorbital bristles, which are wanting in that species. 



Male. — Length of body, 3 millimeters; of wing, 3.2. Head 

 black; frons and face dark reddish brown, shining; frons about 

 as broad as long, with parallel sides, with the eye borders very 

 narrowly white and continued on the cheeks ; face concave, with 

 rather prominent mouth border; antennae entirely reddish yel- 

 low, the third joint obtuse at end and shorter than the face, 

 with finely pubescent arista; prselabrum short, not prominent, 

 yellowish; palpi yellowish; proboscis brown; pubescence of the 

 frons yellowish ; bristles black ; the single pair of f rontoorbitals 

 directed backward and weaker than the two pairs of equally 

 strong but short verticals, the inner pair converging. 



Thorax stout, as long as broad, shining black, finely and 

 scarcely punctulate, with very short dark pubescence; bristles 

 black and very short; pleurae convex, smooth, glistening, black. 

 Scutellum of great size, colored and punctulate like the dorsum, 

 with a pair of very short, stout bristles near the end. Squamae 

 small, pellucid, brownish; halteres brov^niish, the knob blackish 

 above. 



Abdomen short, almost triangular, smooth, shining bluish 

 black, glistening, with short and soft whitish pubescence; the 

 two first segments raised, forming a triangular keel, very acute 

 toward the middle. Coxae and femora dark broAvnish, with short 

 dark pubescence ; tibiae paler ; front tarsi blackish, the posterior 

 four entirely whitish. 



Wings grayish hyaline, with a faint yellowish tinge; the 

 base of the second costal cell in middle, the base of the first 

 basal and the whole upper part of the second basal pale brown ; 



