PHILIPPINE DIPTERA, II 23 



duced behind on the sides; third segment yellow, with a tri- 

 angular black spot at base on each side, sometimes less distinct; 

 fourth to seventh segments black, with a yellow hind border, 

 which becomes gradually broader on the last segments ; genitalia 

 black, with whitish pubescence; venter black, the second and 

 third segments almost entirely yellow, with rather long, pale 

 yellowish hairs. Coxae shining yellowish, the posterior four 

 with a broad black spot outside and the front pair with long 

 whitish hairs; all the trocanters reddish yellow; all the femora 

 black, strongly shining, with reddish tips, with some pale hairs, 

 and those of the hind pair with four or five strong black 

 bristles at end below and before; tibiae yellowish, with long 

 black bristles; spur of the front tibiae black, stronger than in 

 S. rubricosus, and not curved outward ; tarsi dark reddish, with 

 black ends ; claws black, with red bases ; pulvilli yellow. 



Wings grayish hyaline, iridescent, with black veins; fourth 

 posterior cell at end as broad as the second ; discoidal cell narrow, 

 the anterior cross vein placed near its middle; anal cell very 

 narrow at end ; second longitudinal vein distinctly bent forward 

 at end. 



LUZON, Laguna, Mount Banahao. MINDANAO, Butuan 

 (Baker) . 



135. Damalina semperi O. S. 1882. 



Mount Banahao. A very peculiar, endemic insect. 



136. Xenomyza vitripennis 0. S. 1882. 



Numerous specimens of both sexes from Baguio, Benguet, 

 and from Mount Maquiling, Laguna. The species seems to be 

 very variable in the color of the legs, which varies from entirely 

 black to entirely red or yellowish to variations of these colors. 

 It was recently recorded also from Formosa, and the specimens 

 from there were also very variable. 



As the type of the genus Damalis was established by Westwood 

 to be the South American species D. curvipes Fabricius, the 

 name Xenomyza Wiedemann 7 must be used for the oriental 

 species. 



137. Epholchiolaphria vulcanus Wied. 1828. 



Butuan, Mindanao. This species is widely spread over the 

 Malay Archipelago and is recorded also from Formosa. It is 

 notable that in these Philippine specimens the bristles of the 

 mystax are all yellow, instead of black, as they were originally 



7 See Coquillett, Proc. U. S. Nat. Mus. (1910), 37, 530. 



