INSECUTOR INSCITI^ MENSTRUUS 187 



and along the cord ; veins dark brown, paler in the costal 

 region. Venation : Sc._. far before the origin of Rs, Rs strongly- 

 arcuated at origin ; r-m connecting directly with Rs about one- 

 half its length before the distal end of the sector ; R^ connect- 

 ing with i?^ almost at the extreme tip of the latter ; -^4+5 about 

 twice r-ni; cell ist M.^ open by the atrophy of m; cell M^ only 

 a little shorter than cell M^ ; basal deflection of Cwi about two- 

 thirds its length beyond the fork of M, the fusion extensive. 



Abdomen obscure yellow, the tergites with a continuous, 

 relatively narrow, dark brown median line. 



Holotype, female, Gifu, May 10, 1931 (K. Takeuchi). 



Nesopeza albitibia, new species. 



Male. — Length about 9 mm. ; wing, 9.3 mm. 



Rostrum yellow, the palpi brown. Antennae relatively elong- 

 ate, if bent backward extending beyond the base of the abdo- 

 men ; scape light yellow ; first flagellar segment obscure yellow ; 

 remainder of flagellum dark brown. Head brown, the anterior 

 part of vertex yellow. 



Thorax brown without distinct markings, the pleural region 

 crushed. Halteres yellow, the knobs conspicuously dark brown. 

 Legs with the coxae brownish yellow ; trochanters yellowish 

 testaceous, the tips narrowly dark brown ; tibiae white, the tips 

 of the posterior tibiae narrowly black ; anterior tibiae slightly 

 infuscated, the extreme base and a broad subterminal area 

 white, the tips narrowly black ; tarsi white. Wings with a strong 

 brown tinge, the stigma dark brown ; a conspicuous white spot 

 before and beyond the stigma ; veins dark brown. Venation : 

 Generally as in N . taiwania Alex. ; Sc longer ; petiole of cell M^ 

 only about one-half the length of the petiole of cell M^ ; fusion 

 of M and Cu slight ; cell 2nd A narrow. 



Abdomen dark brown, the tergites indistinctly ringed with 

 pale; sternites more distinctly bicolorous, the apical half of 

 the segments distinctly obscure yellow, the basal half dark 

 brown. Hypopygium chestnut-brown. 



HnJotypc, male. Mount Tbuki, June 4, 1921 (K. Takeuchi). 



