56 PHILIPPINE DIPTERA, II 



of equal size, one at level of the ocelli, the other before the 

 middle of the frons; no distinct ocellar or postvertical bristles. 

 In profile view the head is almost entirely occupied by the eyes, 

 which are rounded and of great size ; frons only a little prominent 

 above the antennae; ocelli placed just at middle distance be- 

 tween the inner vertical and the anterior frontoorbital bristles. 



Mesonotum entirely yellow, a little shining and a little darker 

 on dorsum, more orange and opaque on sides and on pleune; 

 conical and exceedingly prolonged in front; on dorsum clothed 

 by short black hairs disposed in almost regular longitudinal 

 rows; quite bare on pleurae. Bristles black; no humeral; a 

 single notopleural, the posterior one, placed apparently on the 

 pleura, on account of the peculiar form of mesonotum, and just 

 below the very oblique and broadly interrupted suture; one 

 anterior and one posterior supra-alar; one pair of dorsocentrals 

 very near the scutellum; one mesopleural. Scutellum elongate, 

 triangular, with one basal and one apical pair of long bristles; 

 postscutellum of a very peculiar form, in shape of an obtuse 

 cone, more prominent than the scutellum itself, entirely yellow, 

 opaque; mesophragma short, yellow, whitish-dusted. Squamae 

 very small, yellowish, with brown border; halteres yellowish, 

 with brown knob. 



Abdomen narrower than the thorax, elongate, linear, of equal 

 breadth throughout; about as long as the mesonotum, entirely 

 yellow, opaque, with short black hairs ; the last segment whitish- 

 dusted ; the very small genitalia yellow, whitish-dusted, retracted, 

 destitute of appendages. Venter pale yellow, with black hairs 

 on the sides. Legs thin, not elongate ; coxae and femora yellow ; 

 tibiae and tarsi black, but on these last the elongate praetarsi of 

 the front pair whitish; front coxae with some short black hairs 

 at end ; middle coxae with a long bristle on the middle of anterior 

 side ; apical spur of middle tibiae very long, black. 



Wings spatulate, constricted to form a long and narrow basal 

 stalk; uniformly suffused with a pale yellowish tinge and with 

 the apical third inf uscated ; the internal limit of this inf uscation 

 marked by a narrow, oblique brown band, which begins at fore 

 border a little before the end of the marginal cell and, passing 

 over the hind cross vein, ends at the fifth longitudinal vein. In 

 this fuscous apical part are three distinct, oval, subhyaline spots, 

 one in the submarginal, one in the first posterior, and one in 

 the second posterior cell. Veins yellowish; the first longitudinal 

 very short, ending at end of the stalked part of the wing; sec- 

 ond very long, ending before the apex symmetrically with the 

 fourth ; while the third ends at the apex itself ; these three veins 



