THE CANADIAN ENTOMOLOGIST 209 



yellow, stigma not indicated. Venation (see fig. 1; plate IV.); cross- 

 vein r-m distinct; basal deflection of Cut beyond the fork of M. 



Abdomen, tergum and sternum dark brown; ovipositor light 

 yellow. 



Vial No. 28.— Tokyo, Japan; April 26, 1912. 1 9 . 



Holotype, 9 • — Vial No. 28, in author's collection. 



This species differs from the European R. longirostris by its 

 shorter rostrum, cylindrical flagellar segments with short bristles; 

 pale maxillary palpi and other colorational differences, which may, 

 of course, vary in series. 



EXPLANATION OF THE PLATES. 



Plate III. 



Fig. 1 . Wing of Rhipidia pulchra septentrionis, sub sp. n. 



Fig. 2. Wing of Limnophila japonica, sp. n.. 



Fig. 3. Wing of Erioptera elegantida, sp.'n. 



Fig. 4. Wing of Limnophila satsitma Westwood. 



Fig. 5. Wing of Tricyphona vetusta, sp. n. 



Fig. 6. Wing of T. kiiioanai, sp. n. 



Fig. 7. Wing of Ptychoptera japonica, sp. n. 



Fig. 8. Wing of Geranomyia avocetta, sp. n. 



Fig. 9. Wing of Dicranoniyia japonica, sp. n. 



Fig. 10. Wing of D. nebulosa, sp. n. 



Fig. 11. Wing of Molophilus pegasus, sp. n. 



Fig. 12. Wing of Gonomyia insulensis, sp. n. 



Fig. 13. Wing of Conosia irrorata Wiedemann. 



Fig. 14. Wing of Gonomyia superba, sp. n. 



Fig. 15. Wing of Erioptera asymmetrica, sp. n. 



Plate IV. 



Fig. 1 . Wing of Rhamphidia nipponensis, sp. n. 



Fig. 2. Wing of Limnophila inconciissa, sp. n. 



Fig. 3. Wing of Tricyphona insnlana, sp. n. 



Fig. 4. Liogma knwanai, sp. n. 



Fig. 5. Hypopygium of Geranomyia avocetta; lateral aspect. 

 e — penis guard; d — dorsal apical appendage; v — ventral apical 

 appendage. 



