AUSTRO-MALAYAN DIPTERA 463 



the front side being a little concave, the tip rounded ; tlie hairs 

 on the arista moderately long. The anal cell is drawn out in a 

 point ; the first vein ends a little beyond the anterior crossvein ; 

 the second forms two waves and then turns upwards towards 

 the margin; the third almost straight, with very slight sinuo- 

 sities ; strongly diverging from the fourth ; the fourth slightly 

 arched before the posterior crossvein, thus expanding the discal 

 cell a little ; crossveins nearly straight and perpendicular ; the 

 posterior one with a very slight sinuosity in the middle. Mac- 

 quart's figure (Tab. 30, f. 2) is only an approximation. The 

 ovipositor is flat, triangular, very broad at base and compara- 

 tively long. Ptilona v. d. Wulp (Tijdschr. etc. XXIII) resembles 

 Acanthoneura somewhat in the coloration of the wings, but 

 differs in the absence of bristles on the veins, in the more 

 straight course of the second vein etc. 



Xiria obliqua n. sp. </. Wings with a brown apex and an 

 oblique brown crossband , both coalescing near the posterior 

 margin. Length 9-10 mm. 



Head, proboscis and palpi black ; a purplish reflection on the 

 large transverse facial swelling ; vertex, and two stripes running 

 down from it , metallic blue , shining. Antennae black ; third 

 joint pale yellow, with a whitish reflection near the base ; ari- 

 sta plumose. Thorax including scutellum metalhc blu-e , with 

 purple reflections ; but little shining ; its surface is finely cha- 

 greened and pubescent; pectus blackish, with a whitish, seri- 

 ceous pubescence. Halteres yel- 

 low. Abdomen metallic purple , 

 blue towards tlie end. Coxae 

 and femora pale yellow; tip of 

 the latter brown ; tibiae and 

 front tarsi black; first and base 

 of second joint of middle tarsi -Y«v«a obiuxua. 



whitish , the remainder black ; 



the hind tarsi have the same color, only the first joint is more 

 yellowish. The wings have the apex brown, which color extends 



