BENGTSSON, AN ANALYSIS OF DESCRIB. SCANDIN. EPHEMERIDA. 21 



14. Baétis muticus Lin., 



15. Baetis niger Lin. and 



16. Baetis vitreatus Zett. (1. c. pag. 177) are not foiind 

 in the collection. 



17. Heptagejiia semicolorata Curt. (1. c. pag. 177) is not 

 found in the collection. 



18. Heptagenia sidphurea Mull. (1. c. pag. 177). — Botli 

 the specimens in the collection, 1 J^, 1 5 imag., labelled »Ifö- 

 sjön 7. 81» belong to this species. 



19. Heptagenia jluminum Pict. (1. c. pag. 178) is not 

 found in the collection. 



20. Heptagenia venosa Fabr. (1. c. pag. 178). — Three spe- 

 cimens are found in the collection, of which one, from »Aaset 

 i Norge» is Heptagenia dalecarlica Bgtn^ one, labelled ^>Baetis 

 venosa», is Euphyurus vespertinus (Lin.) (albitarsis Bgtn). The 

 third specimen is defective and indefinable. 



^ Neue Ephemer. p. 116. 



Tryckt den 22 oktober 1912. 



Uppsala 1912. Almqvist &, \Viksells Boktryckeri-A.-B. 



