138 The Philippine Journal of Science 1917 



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. Rivellia 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,^^ but not reaching the hind border. Named 

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

 on the Ortalidae, and chiefly on the Platystominse, 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; 

 frons with the broad middle stripe dark reddish brown, more 

 distinct in the male than in the female, and with a narrow 

 argenteous lateral line, which is continued below on the narrow 

 cheeks ; face with whitish dust, shining black below ; antennae 

 , black, only a little dark reddish at base, with a dark, microscop- 

 ically pubescent arista; pralabrum shining black; proboscis 

 and palpi black, the last with narrow yellowish apical borders; 

 bristles black. 



Thorax and scutellum shining black, with faint dark gray 

 pollen and black hairs and bristles; pleurae and mesophragma 

 shining black. Squamae white; halteres yellowish. Abdomen 

 entirely shining black in the female, with the base broadly 

 orange reddish in the male; the short pubescence pale; male 

 genitalia black with yellow penis; ovipositor dull black. Legs 

 black, the tarsi entirely whitish in the male, with the last three 

 joints blackish in the female. Wings exactly as in R. fusca, 

 only second dark crossband is much broader than the two con- 

 tiguous hyaline spaces and passes below the fifth longitudinal 

 vein, ending toward the middle of the third posterior cell. 



Luzon, Laguna, Los Banos (Baker) . 



179. Loxoneura decora Fabr., 1805, var. bakeri var. nov. 



About the same as small specimens of L. decora, but distin- 

 guishable as follows: 



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



