INSSCUTOR INSCITI^ MgNSTRUUS 79 



angulated at origin ; r more than twice its length from the tip 

 of i?i ; deflection of i?4-|-5 arcuated ; cell ist Mo closed, rela- 

 tively small ; basal deflection of Cm^ before the fork of M. 



Abdominal tergites dark brown ; sternites yellow, the seg- 

 ments narrowly ringed caudally with dark brown. Ovipositor 

 with the tergal valves very long and slender, straight. 



Habitat. — Formosa. 



Holotype, 9 , Tattaka, altitude about 7,400 feet, August 17, 

 1931 (T. Esaki). 



This interesting Limnobia is dedicated to the collector who 

 has secured many undescribed species of Tipulidae in the 

 mountains of Formosa. 



Limnobia viridula, new species. 



General coloration light green ; antennal scape dark brown, 

 the flagellum pale brownish testaceous ; vertex between the eyes 

 silvery white; pronotum and anterior margin of praescutum 

 with a narrow brown, median stripe ; legs brown ; wings sub- 

 hyaline, stigma small. 



Male. — Length, Q.?> mm. ; wing, 8.6 mm. 



Rostrum and palpi dark brown. Antennae with the scape 

 dark brown, the flagellum conspicuously pale brownish testa- 

 ceous. Head dark brown, the vertex between the eyes con- 

 spicuous silvery white. 



Pronotum light green with a narrow brown median stripe. 

 Mesonotum light green, the cephalic portion of the praescutum 

 with indications of a brown median stripe. Pleura light green. 

 Halteres pale, the knobs infuscated. Legs with the coxae and 

 trochanters pale green ; remainder of the legs brown, the 

 femoral bases a little paler. Wings subhyaline ; stigma small, 

 circular, pale brown ; veins brown. Venation : Sc^ ending 

 nearly opposite r-m; Rs arcuated; r at tip of 7?^ ; cell 1st M., 

 rectangular ; veins beyond the cord long and parallel as in the 

 genus Libnotcs; basal deflection of Cm, just before the fork 

 of M.. 



Abdomen light green, including the hypopygium ; pleural 

 membrane faintly infuscated. Male hypopygium with the 



