184 INSECUTOR INSCITI^ MENSTRUUS 



Dactylolabis flavidipennis, new species. 



Female. — Length, 6.3 mm. ; wing, 7.2 mm. 



Rostrum and palpi dark brown. Antennae with the first 

 scapal segment gray; remainder of antenna black. Head clear 

 gray pruinose. 



Pronotum light gray. Mesonotal praescutum gray with four 

 conspicuous dark brown stripes ; remainder of mesonotum dark 

 gray, the scutal lobes a little infuscated. Pleura light gray. 

 Halteres yellow. Legs with the coxae yellow, the outer faces 

 pruinose ; trochanters yellow ; femora and tibiae light brown, 

 the tarsi dark brown. Wings light yellow ; very indistinct brown 

 clouds at r, along the cord and outer end of cell ist M^ ; veins 

 yellow, darker beyond the cord. Venation : Sc^ ending opposite 

 the fork of Rs, Sc.^ not far from the tip of Sc^ ; i?2+3 about 

 twice the length of r-m; Rs gently arcuated; petiole of cell M-^ 

 short, about three-fifths the cell ; basal deflection of Cm^ at the 

 fork of M. 



Abdominal tergites light brown, sternites obscure yellow, with 

 a capillary sublateral black line. Ovipositor very peculiar in 

 structure, the valves very high and compressed, notched at tips. 



Holotype, female, Gifu, May 5, 1921 (K. Takeuchi). 



Dactylolabis longicauda, new species. 



Male. — Length about 6-6.5 mm.; wing, 6.5-7.5 mm. 



Rostrum and palpi black. Antennae with the basal segment 

 dusted with gray ; remainder of the antenna black. Head gray. 



Pronotum light gray with a narrow brown median line. 

 Mesonotal praescutum light brown with four dark brown 

 stripes, the extreme cephalic margin of the sclerite narrowly 

 grayish ; scutum grayish brown, the lobes conspicuously dark 

 brown; scutellum and postnotum brownish gray. Pleura gray. 

 Halteres yellow. Legs with the coxae dusted with gray ; 

 trochanters obscure yellow ; remainder of the legs dark brown- 

 ish black, the femoral bases narrowly paler. Wings with a 

 uniform brown suffusion, the base indistinctly yellowish ; 

 stigma barely indicated ; veins dark brown. Venation : Sc-^ 

 ending before the fork of Rs, Sc, at its tip ; r near the extreme 



