[NSKCUTOR INSCITI^ MENSTRUUS 183 



r on Ro about its own length beyond the fork; cell ist M^ 

 open by the atrophy of m; basal deflection of Cm^ a short dis- 

 tance beyond the fork of M; anal veins divergent. 



Abdominal tergites brown, the lateral margins of the seg- 

 ments paler; sternites brownish yellow. Ovipositor with very 

 long valves. 



Holotype, female, Mount Minomo, May 4, 1921 (K. Ta- 

 keuchi). 



Paratopotype, female. 



Ormosia confluenta is allied to the Alaskan O. flaveola 

 (Coquillett). 



Dactylolabis diluta, new species. 



Male. — Length about 6 mm. ; wing, 9 mm. 



Rostrum and palpi dark brown. Antennae dark brown. Head 

 dark gray. 



Pronotum large, brownish gray, the lateral angles of the 

 scutellum obscure yellow. Mesonotum shiny black with a rather 

 sparse microscopic yellowish pubescence that appears like a 

 pollen. Pleura and sternum light gray. Halteres yellow. Legs 

 with the coxae black, microscopically pubescent; trochanters 

 yellow ; remainder of the legs dark brown, the femoral bases 

 somewhat paler. Wings with a strong brownish yellow tinge, 

 the base clear yellow ; very diffuse brown clouds, distributed as 

 follows : Origin of Rs, tip of Sc^ continued caudad along the 

 cord ; outer end of cell ist M^ ; at r; fork of Mi-}-, ; less dis- 

 tinct clouds at the ends of veins R.,, Cu^, Cu^ and in cell 2nd A; 

 veins dark brown, more yellowish at the wing-base. Venation: 

 Sc-^ ending just before the fork of Rs, Sc^ about twice its 

 length from the tip of Sc-^ ; Rs long ; -^2+3 one-half longer 

 than the deflection of R^-^r, ; petiole of cell M^ about one-half 

 longer than the cell ; basal deflection of Cu^ before the fork of 

 M, the distance about equal to the basal deflection of R^-^^. 



Abdominal tergites dark brown, the basal sternites obscure 

 brownish yellow. 



Holotype, male. Gifu. April 20, 1921 (K. Takeuchi). 



