1 66 DURHAM DIPTERA. 



XXVII. 269. 



58 (10). Wings with the stigma absent or indistinct, C 3 not 



darkened, and only about one-fourth of the length 

 of C 4 . 



59 (70). X.4. much before the middle of O. 



60 (69). Eyes of the male not touching. Legs of the female 



not entirely yellow. 



61 (62). Legs black, only the knees yellow; male with a 



depression on the anus. (1416. incognitus, Verr.) 



62 (61). Legs with considerably more than the knees yellow. 



63 (QQ). Anus of the male without any depression. 



64 (65). Tibiae considerably darkened. 



141 7. Pipunculus confusus, Verr. 

 Harperley, 1 $, 14-6-04. 



65 (64). Tibiae all yellow. (1418. rufifies, Mg.) 



66 (63). Male anus with a depression. 



67 (68). Femora black with only the tip orange, antennae with 



a long beak. ( r 4i9- hcemorrhoidalis, TAX.) 



68 (67). Femora yellow with only a blackish ring, antennae 



not beaked. (1420. xanthofius, Thorns.) 



69 (60). Eyes of the male touching, legs of the female entirely 



yellow, abdomen in both sexes with yellow side 

 markings. (142 1. maculatus, Wlk.) 



70 (59). X.4. at about or after the middle of O., eyes of the 



male touching. 



71 (72). Tarsi nearly all blackish, frons of the female all dull 



greyish, eyes of the male touching for a long 

 space. (1423. geniculates, Mg.) 



72 (71). Tarsi nearly all yellowish, female frons shining black 



on the upper half. 



73 (74). Abdomen without distinct black bristles, eyes of the 



male barely touching. (1424. littoralis, Beck.) 



74 (73). Abdomen with distinct black bristles on at least the 



last segments, eyes of the male touching for a long 

 space. (1425. sylvaticus, Mg.) 



75 (3). Humeri and scutellum inflated, ocellar bristles absent, 



V.4 4 forked. 

 268. Nephrocerus, Ztt. (1396. flavicornis, Ztt.) 



