98 ALLAX HANCOCK PACIFIC EXPEDITIONS VOL. 3 



PLATE 15 



Fig. 42. .Istrrionilla japonica CI. 



Fig. 43. Psrudnninolia dolioliis (Wall.) Grun. Colony. 



Fig. 43a. Part of colony more highly magnified. End ceil in valve view, others 

 in girdle view. 



Fig. 44. iXitzscliia seriata CI. Four-celled chain. 

 44a. \"alve view of a cell. 

 44b. Girdle view of a cell. 



Fig. 45. Nitzscliia piingens var. atlantica CI. Girdle view of a chain. 



45a. \'alve view of a chain. 



45b. Valve view of a cell. 



45c. Girdle view of a cell. 



