ART 4 CRANE FLIES FROM SIBERIA ALEXANDER 17 



of the knobs obscure yellow, the base of the stem narrowly paler. 

 Legs with the coxae pale, sparsely pruinose; trochanters yellow; 

 femora brownish yellow, the tips conspicuously blackened; tibiae 

 light brown, the tips narrowly dark brown; tarsi dark brown. Wings 

 with a grayish brown tinge, the base and costal region yellow; stigma 

 brown; wing- apex darker brown; conspicuous subhyaline areas 

 beyond the cord and stigma, appearing as an oblique band from the 

 costa through cell 1st i/, into the base of cell M^ ; a smaller pale 

 area before the stigma in cell 1st R^ ; a large pale spot before the end 

 of cell J/, crossing vein Ou into cell Cu; a small pale spot on vein 

 Ist A near one-third its length, the space between these two latter 

 subhyaline areas a trifle more infuscated than the ground-color; 

 anterior cord and origin of Rs slightly infuscated; veins brown, dark 

 yellow in the flavous areas. Venation: Rn preserved, widely diver- 

 gent from i?3; petiole of cell M^ shorter than m; cell 1st M^ elon- 

 gate, its principal faces parallel. 



Abdomen with the basal two tergites yellow, the remaining ter- 

 gites brown, each with gray lateral and caudal margins and a median 

 and sublateral dark brown longitudinal stripes; on the subterminal 

 segments, the pale lateral margins are very broad and conspicuous, 

 more yellowish; sternites generally similar with pale caudal margins. 

 Male hypopygium (fig. 6) as in the hebes group; tergite dark brown, 

 narrowed posteriorly, the caudal margin nearly truncate, with a very 

 low, blunt, median lobe that is light yellow (fig. 5) . Outer dististyle 

 flattened, irregularly oval, pale. Ventral mesal portions of the 

 basistyle produced mesad into a pale, submembranous blade that is 

 irregularly bifid at apex on median line, the dorsal arm with the 

 margin narrowly blackened, overlying its mate of the opposite side; 

 posterior lobes directed ventrad as an apron-like structure that lies 

 in the notch of the eighth sternite. Gonapophyses projecting ventrad 

 from this notch, chitinized, narrowed to the tips which are weakly 

 toothed. Eighth sternite deeply incised, the incision densely filled 

 with relatively short, golden-yellow setae. 



Described from a single male, collected at Amagu, Kudia River, 

 Siberia, July 1923 (T. D. A. Cockerell). 



Type.—M^XQ, Cat. No. 28368, U.S.N.M. 



TIPULA LATEMARGINATA Alexander 



1921. Tipula latemarginata Alexander, Ann. Ent. Soc. Amer., vol. 14, pp. 

 128-129. 



One male, Amagu, Kudia River, Siberia, July 1923 (T. D . A. Cock- 

 erell). The species has an extensive distribution in Japan. 



