THE PLANKTON OF EASTERN NOYA SCOTIA WATERS 



17 



SESSIONAL PAPER No. 22a 



12 a and b. Pyrophacus horologmm. x 300. 



13. Protoceratium reticulatum. x 400. 



14. Gonyaulax spinifera. x 400. 



15 a and c. Peridinium reniforme. x 200. 



16. Peridinium lenticnlare. x 300. 



17. Peridinium pellucidum. x 300. 



18. Peridinium ovatum. x 400. 

 20. Ceratium fusus. x 100. 



21 a and b. Gymnaster asterias. x 600. 



Fig. 1. Coscinodiscus concinnus. x 100. 



2. Coscinodiscus from side. 



3. Coscinodiscus centralis, x 150. 



4. Actinoptychus undulatus. x 250. 



5. Ehizosolenia setigera. x ' 200. 



6. Ehizosolenia stylifbrmis. x 200. 



7. Ehizosolenia setigera. x 500. 



8. Chsetoceras decipiens. x 150. 



9. Chsetoceras boreale. x 350, end-view of chain. 



10. Chastoceras boreale. Girdle-view of end of chain. 



13. Bacteriastrum varians. x 250. 



14. Skeletonema costatum. x 600. 



15. Striatella unipunctata. x 350. 



16. Licmophora lingbyei. x 350. 



17. Mtschia (Bacillaria) paradoxa. x 400. 



18. Nitschia closterium. x 300. 



19. Nitschia longissima. 



20. Bhabdonema sp. 



21. Paralia sulcata. 



22. Synedra (Thalassiothrix) nitsehioides. x 350. 



23. Actinocyclus Ealfssi. x 250. 



24. Tabellaria sp. 



Pig. 1. Trochisia brachiolata. x 400 



2. Trochisia Clevei. x 300 



3. Trochisia dictyon. x 300 



4. Undetermined organism, similar to Hensen's ' Sternenhaar-statoblast.' 



5. Hexasterias problematica. x 450 



6. Hexasterias spina-trifida. x 300 



7. Halosphsera viridis. x 150 

 7a. One of the swarmspores. 



8. Distephanus speculum, x 1000 



9. Ebria tripartita, x 750 



10a, b, c and d. Eutreptia sp. growing in old boat at Canso, from side, x 1250, 



10a from mouth, 106 to show pyrenoid, 10c development in cyst. 

 11. Chrysomonad. 



PLATE II. 



Chseeoceras dichaeta, side view, x 250. 



PLATE m. 



