90 Annals Entomological Society of America [Vol. XII, 



Holotype, d^, Victoria, British Columbia, July Gth, 1912. 



Allotype, 9 , topotypic. 



Paratypes, 1 cf, 6 9 9 's, topotypic. 



This species very closely resembles opisthocera. The wings 

 are a trifle paler, likewise the stigma. The very different 

 construction of the ninth tergite of the male, absolutely differ- 

 entiates the two species. One male paratype has the thoracic 

 stripes much less distinct. 



Tipula opisthocera spec. n. 



Testaceous; antennal flagellum unicolorous, fuscous. Thoracic 

 stripes distinct. Pleural process conspicuous, strongly curved. 



Male. Length, 12 millimeters; wing, 15 millimeters. 



Head concolorous; frontal prolongation long, clothed with blackish 

 hair, rather long on the nasus. Palpi brownish, the fourth joint darker 

 and but little longer than the three preceding joints together. Face 

 yellow. Antennse slender, scapal joints yellow, first flagellar joint yel- 

 lowish fuscous, joints subcylindrical, basal enlargement moderate with 

 a whorl of rather long, black bristles; pubescense very flne, short, whitish. 

 Front and occiput very dark fuscous, except near the base. 



Thorax concolorous, shining. Praescutal stripes distinct, brown, 

 rather broad and indistinctly margined with darker brown, the median 

 stripe scarcely narrowed posteriorly, the lateral stripes much abbreviated 

 in front, continued upon the scutum, where they leave but a narrow 

 lateral stripe and a very narrow margin within, of the ground color. 

 Scutellum and postnotum concolorous, lightly touched with fuscous. 

 Pleura pale testaceous, with a faint, pale sheen. Legs yellowish-brown, 

 densely clothed with brown hair ; coxa^ and base of femora paler, yellow ; 

 apices of femora and tibige fuscous, the latter longer than the metatarsi; 

 tarsi fuscous. Halters concolorous, paler at base, club infuscate. 

 Wings grayish with a fuscous tinge; vein M and all the veins beyond 

 the cord broadly margined with hyaline ; costal cells a very faint yellow ; 

 stigma brown; the antestigmal spot extends into the base of cell M3, is 

 faint beyond cell Rl ; a hyaline spot beyond the stigma. Rs, vein M 

 and the apical veins except those limiting cell 1st M2, strongly setigerous. 



Abdomen testaceous, paler towards the base; a fuscous dorsal 

 stripe extends from the second tergite to the end of the seventh, becoming 

 more diffused posteriorly; tergum indistinctly margined with fuscous, 

 more accentuated in a dark spot on the anterior angles of tergites three 

 to seven, a faint median ventral stripe. The eighth sternite clasping 

 cephalad, narrowed and somewhat prolonged posteriorly, the caudal 

 margin rather deeply emarginate, with a triangular appendage at each 

 angle of the emargination, the latter filled with a whitish membrane, 

 which has the appearance as though it consisted* of matted hair. 

 Hypopygium (PI. V, Figs. 11 and 12) reddish-brown; ninth tergite 

 rather narrow, directed obliquely dorsad, somewhat turgid, with a 

 very deep oval emargination, the lateral angles prolonged, turgid, 



