198 THE CANADIAN ENTOMOLOGIST 



Fore coxse yellowish, other coxse black; scape of antennae black. 

 (Japan) japonica, sp. n. 



6. ScLitellum yellow. (Europe) laciistris Meig. 



Scutellum black 7 



7. Abdomen with the basal third of the second segment and the 



basal one-half of the third segment reddish orange. 



(India) distincta Brim. 



Abdomen entirely black. (Europe) paludosa Meig. 



8. Femora and tibiae bright orange-yellow, tarsi coal-black. 



(Abdomen orange-yellow, tergites with blackish borders to 

 the segments; sternites orange-yellow.) 



(India) atritarsis Brun. 



Femora and tibiae more or less black or brown; tarsi not coal- 

 black 9 



9 . Pleurae silvery-white 10 



Pleurae not white. Thorax different in colour in the two sexes; 



femora bright yellow, hind pair black on the basal two-thirds 

 except the extreme base. (India) tibialis Brun. 



10. Hind coxae black except at tip; femora brown at tip; scutellum 

 reddish; hypopygium large, reddish; first segment of the 



antennae reddish. (West. U.S.) Jenis O. S. 



Coxae and femora yellow, the latter black at the tip; scutellum 

 yellow; hypopygium small, mostly blackish; antennal scape 

 black. (Europe) scutellaris Meig. 



Ptychoptera japonica, sp. n. 



Wings banded; radial sector very short; antennae of the male 

 very long, about as long as the body; abdomen with little reddish 

 or yellowish colour. 



Male. — Length, 8.5 mm; wing, 8.9 mm; antennae, 8.4 mm.; 

 fore leg, femur, 5.4 mm.; tibia, 5.4 mm.; tarsus, 8 mm.; middle leg, 

 femur, 5.4 mm.; tibia, 5.1 mm.; tarsus, 7 mm. Hind leg, femur, 6.1 

 mm.; tibia, 6.8 mm.; tarsus, 6.3 mm. 



Female. — Length, 11.5-13.5 mm.; wing, 10.7-10.8 mm. 

 Fore leg, femur, 5.6-5.8 mm.; tibia, 5.1-5.4 mm.; tarsus, 7 mm. 

 Middle leg, femur, 5.4 mm.; tibia, 5.4 mm; tarsus, 6.8 mm. Hind 

 leg, femur, 6.2 mm.; tibia, 6.8 mm.; tarsus, 6.2 mm. 



