KEPOirr ON JAPANESE DIPTERA—COQUILLETT. 307 



BIBIO TENEBROSUS, new species. 



Male and female: Black, excei)t the wings, which are pale brown, 

 the base, as far as the small crossvein, grayish-hyaline, the costal cell 

 hyaline before the liiimeral crossvein and dark brown beyond it; 

 stigma l>lack in the male, dark brown in the female. Hairs of the 

 eyes brown or black, those on the occiput and sides of the mesonotum 

 black, on the pleura and sides of the abdomen at the base pale yellow. 

 First, third, find first section of the fourth vein, also the small cross- 

 vein, dark brown, remaining veins yellow. Small crossvein less than 

 two-thirds as long as the first section of the third vein. Hind tarsi of 

 the male sliglitly swollen, the first joint as long as the next two joints 

 taken together. Length, 9 to 12 mm. Four males and one female 

 (No. 008). 



Type.—^'o. 3969, U.8.N.M. 



Family XYLOPHACJIDAE. 



CHRYSOPILA DIVES Loew. 

 Chrysopila dives Loew. 8yH. Besch. Eur. Zwei. Ins., 1871, II, p. 62. 



Four males (No. 09.5), agreeing well with the description, which was 

 founded on specimens from Lake liaikal, Siljeria. 



CHRYSOPILA PULLATA, new species. 



Male: Black, the third joint of the antennae yellow, halteres and 

 abdomen yellowish brown, wings grayish, l)rown in the costal cell and 

 dark brown at the apex of the wing, stigma brownisli-black, first vein 

 bordered with hyaline from the humeral crossvein nearly to the apex 

 of the auxiliary vein, a whitish spot before the proximal end of the 

 discal cell, one beyond the middle of that cell, auotlier before the mid- 

 dle of the first submarginal cell, and a transverse row of five extend- 

 ing from the marginal to the third jmsterior cell, crossing the first 

 posterior cell at its middle. All of the hairs black. Length, mm. 

 Two specimens (No, 097). 



Type.—^o. .'J970, U.S.N.M. 



LEPTIS FLAVIMEDIA, new species. 



Male: Head black, the antennae, ])al])i, and iiroboscis yellow, hairs 

 of palpi and on under side of head yellowish wiiite, those on upper 

 part of occiput black. Thorax yellow, the mesonotum, except on the 

 sides and ])Osterior end, black or brown, opaque, gray ])ruinose; hairs 

 of mesonotum black, those of the pleura mixed yellow and black; 

 scutellum yellow. Abdomen on the first four segments yellow, some- 

 times maiked with a Ijrown dorsal si)ot at the base of the third and 

 fourth, remaining segments black. Legs, including the coxae, yellow, 

 the front and hind tarsi, and middle ones except at the base, brown. 



