78 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 3 



PLATE 5 



Fig. 7. Coretliion hystrix CI. 



7a. A cell in process of division. 



Fig. 8. Lauderia horealis Oian. (Possibly L. annulata CI.) 

 Fig. 9. Leptocylindrus danicus CI. Part of a chain. 

 Fig. 10. Guinardia flaccida (Castr. ) Perag. 



