86 DURHAM DIPTERA. 



XIII. 135. 



35 (36). Pleurae whitish grey, contrasting with the reddish 

 first abdominal segment. Male genitalia with 

 scarcely any processes. 



805. Tipula confusa, v.d. Wulp. 

 Wearhead, 6 $, 4 ?, August, 1901. 



86 (35). Pleurae reddish like the first abdominal segment. 

 Male genitalia with conspicuous processes. 



37 (38). Abdomen without any blackish brown marks. Male 



processes fringed with long fine pale hairs. 



(806. marmorata, Mg.) 



38 (37). Abdomen with blackish brown marks. Male pro- 



cesses exceedingly long, and bearing short black 

 bristly hairs. (804. slgnata, Staeg.) 



39 (6). Wings having a streaked rather than a spotted 



appearance, owing to the clouding of at least V.5. 

 and X.5. ; or if almost unicolorous, then the dorsal 

 stripes are always dark edged. 



40 (41). Abdomen orange with dark dorsal stripe, but no side 



stripes. 



828. Tipula v emails, Mg. 

 Bishop Auckland, Harperley. Common in June, 

 especially females. 



41 (40). Abdomen with side lines, but no dorsal line. 



42 (43). 0.1 . blackish brown. (824. marglnata, Mg.) 



43 (42). 0.1 . brownish yellow. 



44 (45). V.5. clouded with brown its whole length. 



825. Tipula lateralis, Mg. 

 Common everywhere. 



45 (44). V.5. only clouded at its outer part. 



(826. montlum, Egg.) 



46 (1). Wings unicolorous, except the stigma, or with only a 



pale streak under the brown fore-margin, or with a 

 pale spot or diagonal band just before the stigma. 



47 (50). Wings with a dark fore-margin, sharply contrasted 



against the rest of the wing. 



