12 B. C. ENTOMOLOGICAL SOCIETY 



NOTES ON THE MYCETOPHILID^ OF BRITISH COLUMBIA 



By R. S. Sherman. 



From a common Agaricus, or gill-bearing fungus, gathered on Nov. 

 4th, there emerged on Nov. 24th over fifty specimens of Mycetophila 

 monochasta. From similar fungi gathered on Nov. 18th there emerged 

 on Dec. 12th, a numerous brood of Bolitophila cinerea Meig. From 

 fungi gathered on Dec. 16th, there emerged on Jan. 3rd to Jan. 5th, a 

 large brood of Exechias. From another fungus gathered on the same 

 date I obtained a few specimens of Rhymosia- sp., on Jan. 17th. 



The pupal stage of the Exechias emerging on Jan. 3rd lasted fifteen 

 days. The larvae of these Exechias excavated a cell about two inches 

 below the surface and after weaving a delicate white cocoon soon 

 assumed the pupal form, which could be seen quite plainly through the 

 gauzy covering. It was evident that the mature fly made good use 

 of the strong setae, spines, and spurs, with which its legs are armed, in 

 forcing an outlet to the surface of the soil. 



I herewith submit a tentative list of the species of Mycetophilidae 

 found in the Province of British Columbia : 



1. Bolitophila hybrida Meig. Selkirk Mts. ; Stanley Park. 



2. Bolitophila disjuncta Lw. Vancouver; Caulfields. 



3. Bolitophila montana Coq. Vancouver. 



4. Bolitophila cinerea Meig. Vancouver. 



5. Mycetobia divergens Walk. Victoria. 



6. Palaeoplatyura sp. Savary Island. 



7. Ditomyia sp. Savary Island. 



8. Symmerus annulata Meig. Savary Island. 



9. Diadocidia borealis Coq. Commonly distributed. 



10. Diadocidia ferruginosa Meig. Vancouver. 



11. Ceroplatus erminalis Coq. Kaslo; Royal Oak. 



12. Apemon nigriventris Jn. Prairie Hill, alt. 5,800 feet. 



13. Platyura mendica Lw. Savary Island. 



14. Platyura mendosa Lw. Savary Island. 



15. Platyura moerens Jn. Savary Island. 



16. Platyura fascipennis var. sagax Jn. Savary Island. 



17. Platyura intermedia sp. nov. Savary Island. 



18. Macrocera clara Lw. Savary Island. 



19. Macrocera sp. nov. Savary Island; Caulfields. 



20. Macrocera sp. nov. Savary Island. 



21. Monoclona elegantula Jn. Capilano. 



22. Monoclona furcata Jn. 



23. Monoclona sp. nov. Capilano. 



24. Tetragoneura pimpla Coq. Vancouver; Savary Island. 



25. Tetragoneura arcuata sp. nov. Caulfields ; Stanley Park. 



26. Tetragoneura marceda sp. nov. Savary Island. 



