14 



SOME LITTORAL DIATOMS OF JAPAN. 



Fig. 



1 : 





a : 





b: 





c 





d: 





e : 



Fig. 



2, 



Fig. 



3: 



Fig. 



4, 



Fig. 



5: 



Fig. 



6: 



Fig. 



7, 





b: 



Fig- 



8: 



Fig. 



9, 



Fig. 



10: 



Fig. 



11: 



Fig. 



12: 





a : 





b: 



Fig. 13, 



Explanations of Figures in Plate VIII-XIII. 



(All the figures have been drawn with camela). 



Plate VIII. 



Stephanopyxis Palmeriana (Grev.) Grun. var. Japonica Gran. 



three cells in a chain ; oc. 4, obj. D, Zeiss. 



connecting filaments, and portion of the network, oc. 4, obj. 



D, Zeiss. 



net-work more highly magnified, oc. 4, obj. E, Zeiss. 



portion of surface view of valve, oc. 4, obj E, Zeiss. 



cells in division. 4 x A, Zeiss. 

 a-b : two cells of Stephanopyxis Campana Castr. ; net work 



of one valve only illustrated. 4 x E, Zeiss. 



Thalassiosira gravida Cleve ? 4 x D, Zeiss. 

 a-b : two chains of Thalassiosira Nordenskioldii Cleve. "K^x 



a : 4 x E, Zeiss, b : 4 x E, Zeiss ? 



Sceletonema costatum (Grev.) Grun. 4xF, Zeiss. 



portion of Arachnoidiscus ornatus Ehrenb. 4xE, Zeiss. 

 a : Planktoniella Sol (Wallich) Schiitt. 4xD, Zeiss. 



side view of the same. 4 x D, Zeiss. 



Asterolampra Marylandica Ehr. 4 x D, Zeiss. 

 a-b : two cells of Asteromphalus heptactis (Breb.) Ralfs. 



a : 4x F, Zeiss, b : oc. 3, obj. 8, Leiz. 



Asteromphalus tiabellatus (Breb.) Grev. oc. 3, obj. 8, Leiz 



Asteromphalus Cleveanus Grun. ? 4 x E, Zeiss. 



Gossleriella tropica Schiitt. 



cell with chromatophores and neucleus. 4 x A, Zeiss. 



spines of the same. 4 x D, Zeiss. 



another specimen. 4 x A, Zeiss. 

 a : surface view of Auliscus caelatus Bail. A, B : elevated 



portions. 12 x E, Zeiss. 



b : diagramatic side- view of the same, showing elevated 



portions of surface, A and B. moderately magd. 



Fig. 14 



a, b 



c 



Fig. 15 



Plate IX. 



Corethron criophilum Castr. 



two cells ; spines partly omitted. 4 x D, Zeiss. 



another individual. 4 x D, Zeiss. 



Guinardia flaccida (Castr.) Perag. 4 x E, Zeiss. 



