may, wo:.] OKAMURA.—CHAETO. & PERAOAL. OF JAPAN. 105 



33-34. Different views of different specimens, ^y 2 . 



35. One of the cells of a chain set free, ^f 2 . 



36. One of the cells of another chain many-times divided, —-. 



37. Detached cell seen from the lower valve, ^~. 



PLATE IV. 



Figs. 38—39. C. Lorenzianum Grun. 



38. Portion of a chain, *f2. (Tateyama). 

 38 a. Valvular view of a cell of another specimen. (Cape Goza). 



39. Complete specimen, ~ ; portion of terminal horn and of 



one of the remaining horns, slightly magnifed. 



(Tateyama). 

 C. distans Cleve. (Cape Goza). 



Complete chain just forming an endocyst, —-. 

 Portion of a fructified chain, ^. 

 Cross-section of a cell, viewed in slightly oblique direction, 



390 

 1 * 



Another specimen having broader cells, ^y 2 . 



Portion of a fructified chain having broader cells, ^. 



C. didymtim Ehr. var. anglica (Grun.) Gran. 



Portion of a chain, ~. (Cape Goza). 



Central protuberances seen a tittle obliquely, i|^. (,, ,, ). 



Valvular view of a cell of another specimen, ^f 2 . (,, ,, ). 



Still another specimen seen from the narrower girdle- 

 surface in a slightly oblique manner, 2±2. (Cape Goza). 



Portion of a chain. (40 miles off Shinshirijima). 



3 different younger cells of C. didymum Ehr. var. genuina 

 Gran, ^. (Prov. Tosa). 



C. secundum Cleve. (Tateyama). 



Portion of a spiral chain, ~^. 



Portion of another specimen seen from the outer side of 

 spiral chain, ^f 2 . 



51. Portion of still another specimen seen from the outer side 



of spiral chain ; cells are just dividing, ^y 2 . 



52. Valvular view of one of the cells of the specimen shown in 



Fig. 51, 42. 

 Figs. 53-54. C. teres Cleve ? (Tateyama). 



53. Valvular view of a cell of the chain shown in Fig. 54, ~. 



Figs 



. 40-43. 





40. 





41. 





42. 





43. 





43 a. 



Figs 



44-47. 





44. 





45. 





45 a. 





46. 





47. 



Figs 



48 a-c. 



Figs 



49-52. 





49. 





50. 



