PHILIPPINE DIPTERA, II 37 



Abdomen a little longer but not broader than the thorax, dis- 

 tinctly narrowed at base, scarcely punctulate, entirely shining 

 black-aeneous, with a purple band at base of third segment; 

 pubescence short and pale ; venter dull black ; ovipositor shining 

 black-aeneous, flattened. Legs proportionally long, simple, en- 

 tirely black, only the basal joints of all the tarsi dark reddish 

 brown; apical spur of middle tibi well developed, black. 



Wings hyaline, iridescent with a black fore border which fills 

 the costal, subcostal, and the base of the marginal cell, ending 

 at the apex of first longitudinal vein ; besides there is an elongate, 

 apical brown spot filling the extreme end of submarginal cell and 

 extending a little over the third vein, where it ends truncately. 

 Veins pale yellowish with the exception of the first three, which 

 are blackish ; first vein ending a little before the middle of wing 

 and near to the costa ; second vein rather short and near to the 

 first and to the costa, the marginal cell being thus exceedingly 

 narrow, almost linear, not broader than the costal cell; third 

 vein long, ending at apex of wing, perfectly straight, the sub- 

 marginal cell broader than the first posterior cell, which is 

 faintly dilated at end ; fourth vein entirely straight, without any 

 curvature in the discoidal cell on its second section ; fifth vein 

 short, divering; sixth extended to the hind border. Discoidal 

 cell very short, of almost triangular shape ; cross veins very close 

 together, the outer one placed after middle of discoidal cell, 

 and its distance from the posterior considerably shorter than the 

 length of the posterior cross vein itself; anal cell a little shorter 

 than the second basal, its terminal vein a little bent outward in 

 the middle. 



MINDANAO, Dapitan (Baker). 



178. Bivellia hendeliana sp. nov. 



Nearly allied to the endemic species R. fusca Thomson, but at 

 once distinguished by the second dark band of the wings being 

 twice as broad, and very like that of the Ethiopian species, 

 R. latifascia Hendel, 13 but not reaching the hind border. Named 

 in honor of Friedrich Hendel, of Vienna, whose marvellous work 

 on the Ortalidas, and chiefly on the Platystominae, has rendered 

 possible the determination of the beautiful flies of this family. 



Male and female. Length of body, 3.8 to 4 millimeters; of 

 wing, 3.5 to 3.7. Head entirely black; occiput rather shining, 

 with an argenteous border at eyes, which begins near the middle 

 with a short horizontal line and is continued below to the chin ; 



13 Op. cit., Plate II, fig. 30. 



