1913] The North American Species of Tipula, 479 



136. Mesonotum with three broad stripes, posterior margin of eighth stemite 



with two short acute processes; posterior margin of ninth tergite with 

 narrow median and two broader crescent shaped incisions; ninth ster- 

 nite with deep U-shaped incision, containing two tumid appendages. 

 Ante-stigmal spot indistinct, not entering the fourth posterior cell. 



Length (cf ) 15 mm subtilis Doane 



Mesonotum with four, rather broad stripes; eighth sternite with a median 

 rather broad process. Ninth tergite short, incised in the middle; 

 ninth sternite with deep and rather broad incision. Wings hyaline; 

 costal, subcostal and the anterior margin of the anal cells and stig- 

 ma, brown; ante-stigmal spot indistinct, extends into the base of the 



fourth posterior cell. Length 16-22 mm clara Doane, syn. 



pellucida Doane. (See also under 103.) 



137. Small, 10 mm., general reddish-brown color; thoracic stripes obsolete.* 



Posterior margin of segments and last three segments of abdomen 

 dark brown. Wings light brown, veins dark brown; ante-stigmal spot 



reaches the posterior side of the discal cell jejuna Johnson 



Generally larger species, color fuscous or gray 138 



13S. Whitish streaks in anal, axillary and 2-5 posterior cells; a fuscous spot 

 on basal transverse vein. Mesonotum with four stripes; abdomen with 

 three rather indistinct lines; posterior margin of eight sternite with a 

 small appemdage, lateral angle with a pair of larger appendages; 

 ninth tergite ending in two rather acute points. Wings brownish 

 tinted, ante-stigmal spot extends into base of fourth and side of fifth 



posterior cells. Length 19-22 mm unicincta Doane 



Wings without whitish streaks, no fuscous spot on basal transverse 

 vein 139 



139. Eighth sternite incised 140 



Eighth sternite not incised; ninth tergite and ninth sternite deeply incised.. 141 



140. No white spot beyond the stigma; ninth tergite with two small crescent- 



shaped incisions. Brown; mesonotum with three broad brown stripes; 

 scutellum and metanotum with narrow brown line; abdomen trivittate 

 lateral margin of the einargination of the eighth sternite with a pair of 

 broad, two pointed appendages; ninth sternite divided, posterior lat- 

 eral angles with a pair of elongated appendages, which again are 

 provided with a oair of slender, long, twisted and pendulous append- 

 ages. Wings with brownish tinge, ante-stigmal spot extends into the 



base of the fourth posterior cell. Length 19-21 mm acuta Doane 



A white spot beyond the stigma, posterior margin of ninth tergite with 

 Y-shaped incision. Mesonotum with three brown stripes each of 

 which is divided by a gray line; abdomen trivittate, posterior margin 

 of segments yellowish; ninth sternite with rounded incision, contain- 

 ing a pair of whitish appendages. Wings hyaline, ante-stigmal spot 

 very faint, broken, extends into base of fourth posterior cell. Length 

 12 mm fulvinodus fDoane 



141. Gray, mesonotum with three vittas the median indistinct, a median 



yellow line from transverse suture to base of abdomen, anterior mar- 

 gin of segments of the latter paler. Hypopygium small. Wings hya- 

 line, with slight grayish tinge, very faint lighter streaks in nearly all 

 the cells, stigma surrounded by an indistinct whitish cloud, which is 

 incompletely connected with a whitish spot in the base of the discal 



cell. Length 10-14 mm dorsolineata Doane 



Fuscous; mesonotum with five, rather broad stripes, lateral ones con- 

 nected anteriorly; abdomen trivittate; eight sternite large, posterior 

 margin bearing two pairs of appendages; hypopygium large; incision 

 of ninth stemite contains a pair of rather long, somewhat curved, 

 tumid, pendulous appendages. Wings with light brownish tinge, 

 ante-stigmal spot extends into base of fourth posterior cell. Length 

 14-17 mm anstralis Doane 



*No stripes mentioned in the description. 

 fShould have been included under 125. 



