20 NEW OR LITTLE-KNOWN CRANE-FLIES FROM JAPAN 



ceous with an indistinct durker median line; postnotum pale, light gray 

 pruinose. Pleura light gray. Halteres dull brownish yellow, the knobs 

 darker brown. Legs with the coxae light gray pruinose; trochanters dull 

 yellow, the posterior trochanters pruinose; femora brownish yellow, the tips 

 broadly dark brown; tibiae yellowish brown; tarsi dark brown. Wings with 

 a strong brownish gray tinge, the base of the wing and cell C dull j^ellow, 

 cell Sc and the space immediately behind vein Cu brighter yellow; stigma 

 dark brown; a broad hyaline band beyond the stigma extending from the 

 costal margin through cell 1st M2, including the end of cell 2nd R^, the basal 

 two-thirds of Ri, almost the basal half of cell Ri, about the basal third of Ri 

 and practically all of cell 1st M«; in addition to this, an obliterative spot in 

 cell 1st Ri, before the stigma, and indistinct pale areas in the end of cell R 

 and the bases of cells 3nd M-i and Nh; veins dark brown. Venation: cell 

 1st Mi small, pentagonal. 



Abdominal tergites yellowish brown laterally, with a broad dark brown 

 median stripe that is interrupted basally by broad smooth gray bands, on 

 each side of which are rectangular dark brown impressed areas, these located 

 on segments two to seven; sternites generally similar, the basal segments 

 pale buff, the apical segments more grayish; an interrupted brown median 

 stripe on the intermediate sternites; the dark brown impressed areas are 

 found on sternites three to seven. Ovipositor with a long, shiny, dorsal 

 shield, the long, slender tergal valves lying transversely, their outer margin 

 not serrated; sternal valves short and high, extending to about one-third 

 the length of the tergal valves, their tips truncated. The structure of the 

 ovipositor indicates the manner in which the highly specialized types found 

 in the arctica group of the genus Tipula have been derived. 



Habitat. — Japan. Holotype, 9 , Meguro, Tokio, April 28, 

 1919, (R. Takahashi). 



Tipula dichroistigma new species 



Mesonotum shiny black, the praescutal interspaces gray pruinose; an- 

 tennae of the male elongated; pleura gray pruinose; wings yellowish gray, 

 the tips conspicuously darkened; stigma bicolorous, the basal half yellow, 

 the apical half dark brown. 



Male. — Length, about 14 mm.; wing, 19.1 mm. 



Female. — Length, about 19 mm.; wing, 18.8 mm. 



Frontal prolongation of the head rather short, dull yellow, above light 

 gray pruinose; nasus slender; palpi pale brownish yellow. Antennae of the 

 male sex very long, if bent backward extending to near mid-length of the ab- 

 domen; first three segments yellow, remainder of the antennae black; in the 

 female, the antennae are short, about the basal half yellowish, the terminal 

 half of the flagellum brown; male antennae with short verticils on the inner 

 face, long, secund verticils on the outer face of the segments. Head clear 

 light gray. 



I'ronotum black, grayish pruinose. Mesonotal pracscutum shiny black, 

 the interspaces gray {)ruinose; remainder of the dorsum shiny black, the 



