XII, D, 3 Bezzi: Studies in Philippine Diptera, II 133 



wings, or at least the long spine of the underside, are found ex- 

 clusively in the male ; the female is at present unknown. 

 Type, Tylopterna monstrosum sp. nov. 



170. Tylopterna monstrosum sp. nov. Plate I, fig. 2. 



A curious little fly, of strange aspect and coloration. 



Male. — Length of body, 2.8 millimeters ; of wing, 3 ; breadth of 

 wing, 1.2. Posterior part of head shining brownish, with a 

 broad, rounded yellow spot beneath the vertex and with a broad 

 yellow stripe at eye border, which unites below with the pale 

 yellowish lower half of head. Anterior part of head whitish 

 yellow, divided into two parts by a broad black horizontal line, 

 which divides the frons from the face, and in which are placed 

 the black antennae. Arista pale yellowish. Proboscis yellowish, 

 palpi whitish. Short pubescence of head whitish ; vertical bris- 

 tles black. 



Thorax shining black, smooth, with reddish broAvn pleurse; 

 pubescence whitish, bristles black. Scutellum shining black, with 

 the sides and the underside pale yellowish, mesophragma shining 

 black ; halteres whitish. Abdomen uniformly shining black, with 

 whitish pubescence and rather long whitish hairs on the sides; 

 hypopygium black; venter pale yellowish. Legs with the coxae 

 and the tarsi pale yellowish, but the hind femora and the hind 

 tibiae black, the last with yellowish ends; front and middle 

 femora with a subterminal brown streak above; pubescence 

 short, whitish. 



Wings grayish hyaline, iridescent, with yellowish veins and 

 colorless stigma. End of the marginal cell filled by a large deep 

 black spot, which is at least in part callously chitinized. The 

 two chitinous calli deep black, rounded, and placed near the 

 hind border, the smaller before upper end of second posterior 

 cell, the larger at lower inner end of same cell, just at the angle 

 between posterior cross vein and last section of fifth vein. On 

 the underside of wing a strong, straight, chitinous spine, placed 

 on middle of second posteror cell, below the angle of the pos- 

 terior cross vein with the fourth longitudinal vein and directed 

 inward. This spine is black, but its broadened basal part is 

 grayish hyaline, like the wing membrane ; its length is about 0.5 

 millimeter. 



Luzon, Laguna, Mount Maquiling (Baker), one male. 



171. Antineura sericata 0. S. 1882. 



Cagayan, Mindanao. A beautiful endemic species of great 

 size. The ortalid genus Antineura also may be considered as 



