16 PEOCEEDINGS OF THE NATIONAL, MUSEUM voi,. 68 



and narrow, its outer end more or less pointed, m being longer than 

 the petiole of cell J/j ; in some specimens, the latter vein is very 

 short to obliterated, in the latter case cell M^ being sessile; m-cu 

 elongate; cell 2nd A moderately broad. 



Abdomen pale brown, the basal segments paler, the surface of the 

 sclerites with appressed yellow setae; dorso-median line of the ter- 

 gites darker. Male hypopyginm relatively small; caudal margin of 

 the tergite (fig. 7) with a V-shaped notch, the margin of which is 

 provided with microscopic black spinulae. Outer dististyle elon- 

 gate, fleshy. Inner dististyle terminating in a conspicuous black 

 spine, directed dorsad. Region of ninth sternite deeply and nar- 

 rowly incised. Eighth stocnite bearing a very conspicuous, thin, 

 liguliform blade, median in position and light yellow in color. 



Described from three males, collected at Okeanskaja, Siberia, 

 August 1923 (T. D. A. Cockerell). 



Type.— Male, Cat. No. 28367, U.S.N.M. 



TIPULA AMURENSIS, new species 



Belongs to the Tiebes group; antennae elongate, the flagellum uni- 

 formly dark brown; general coloration light gray, the lateral praes- 

 cutal stripes ill-defined; male hypopygium with the eighth sternite 

 densely short-hairy. 



Male. — Length, 13 mm.; wing, 14 mm. 



Frontal prolongation of head dark yellow, with an indistinct darker 

 lateral line; nasus distinct; palpi brownish yellow, the terminal seg- 

 ments a little darker. Antennae elongate, the terminal segments 

 broken, if entire and bent backward, extending to beyond the base 

 of the abdomen ; scapal segments dark yellow; first segment of flagel- 

 lum brownish yellow on basal half, passing into dark brown; remain- 

 ing segments of flagellum dark brown, the basal enlargement of the 

 proximal segments a very little brighter. Head with the anterior 

 part of the vertex surrounding the antennal bases buffy, the remain- 

 der of the vertex dark gray with an indistinct brown median line. 



Pronotum buffy yellow, a trifle darker medially. Mesonotum 

 clear gray, the praescutum with a pair of ill-marked brown stripes, 

 intermediate in position, narrowly separated from one another and 

 further divided by a capillary dark vitta on the anterior half of the 

 sclerito; lateral stripes of a brighter gray than the ground-color, their 

 anterior ends bordered by brown; scutum light gray with an antero- 

 lateral brown spot and a postero-mesal brown circle enclosing a gray 

 center; scutellum and postnotum dirty gray with indications of a 

 capillary darker median vitta. Pleura with the anepisternum and 

 sternopleurite light gray, the posterior plem'ites and postnotal pleuro- 

 tergite more whitish. Halteres slender, brownish yellow, the tips 



