300 



5. D. Udens Oliv. — Gyll. Ins. Sv. 4. 648. 2. — Thoms. Col. Sc. 

 8. 111. 6. 



Hab. in foliis Nymphsese et Potamogetonis ad Christianiam, 

 Sarpsborg (Grimsgaard), in Hvaloerne (Collett), in par- 

 ochiis Odalen, Grue atqve Aamot, nec non in insula Smolen, 

 freqvens. 



6. D. dentata Hoppe. — Thoms. Col. Sc. 8. 111. 7. 

 Ad Christianiam capta. 



7. D. Sparganii Ahrnst. — Gyll. Ins. Sv. 4. 672. 2—3. — Thoms. 

 Col. Sc. 8. 113. 8. 



In parochia Nordrehaug a Doctore Thome capta. 



8. D. Sagittarice Fab. — Gyll. Ins. Sv. 3. 651. 4. — Thoms. Col. 

 Sc. 8. 114. 10. 



Hab. in plantis aqvaticis ad Christianiam in Toien, Hovind, 

 0stenso et Ladegaardsoen, et in parochiis Enebak et Aamot, 

 freqvens. 



9. D. obscura Gyll. — Gyll. Ins. Sv. 654. 6. — Thoms. Col. Sc. 

 8. 115. 11. 



Hab. in plantis aqvaticis ad Christianiam rarius; ad Naes Vaerk 

 a Dom. (Schneider) etiam reperta. 



10. D. aqvatica Lin. — Thoms. Col. Sc. 8. 116. 12. — D. denti- 

 pes Gyll. Ins. Sv. 3. 650. 3. 



Hab. in plantis paludosis, imprimis in Caricetis ad Christia- 

 niam in Toien, Hovind minus freqvens; in Hvaloerne et in 

 Losby Brug in Lorenskoven (Collett), ad Sarpsborg, in Grue, 

 Elverum et Fron, nec non ad Naes Vserk et in Birkenses in 

 Strandebarm (Schneider) inventa. Juli. 

 Var. b Gyll. ad Christianiam lecta. 



11. D. impressa Payk. — Gyll. Ins. Sv. 3. 655. 7. — Thoms. Col. 

 Sc. 8. 117. 14. 



In plantis paludosis ad Christianiam, in Hvaloerne (Collett), 

 et in parochia Nordrehaug inventa. Juli. 

 Var. b Gyll. in 0stenso ad Christianiam lecta. 



12. D. linearis Hoppe. — Gyll. Ins. Sv. 3. 669. 13. — Thoms. 

 Col. Sc. 8. 120, 17. 



13, 





