Explanation of Figures in Plate III-IV. 



PLATE III. 



Figs. 1— 3. Chsetoceras crini turn Schiitt. (Tateyama inProv. Boshytt). 



1. Chain seen from the broader girdle-surface, —-. 



2. Same seen from the narrower girdle surface, ^. 



3. Valve seen from above, ' ,< 1 >(> . 

 Figs. 4-6. C. affine Lauder. 



4. Portion of a chain seen from the broader girdle-surface, 



*?*. (Tateyama). 



4 a. Valvular view of another specimen, —-. 



(Shinoshima, in Prov. Owari). 

 4 b. Portion of the terminal horn, showing dot-like teeth, a 



represents the proximal end, —™. (Cape Goza). 



4 c. Portion of cells, 9 '; 5 . ( ,, ,, ). 



5. Another specimen bearing endocysts, ^y°. 



(Shinoshima, Aug., 2, 1904). 



6. Portion of chain resembling Cleve's C. Ralfsii, shown in 



Cleve's Diet. Java, fig. 15, *|£. (Cape Goza). 



6 b. Portion of cells showing constriction of hoops at b, b, but 



not at a, a, ^. (Cape Goza). 



6 c. Portion of the teminal horn, a represents the proximal 



end, ±*f T °. (Cape Goza). 



Fig. 7. Portion of a chain of C. furca Cleve var. macroceras 



Schroder. (Tateyama). 



Figs. 8—11. C. compressa Lauder. 



8. Chain seen from the broader girdle-surface, ^~. 



(Tateyama). 

 8 a. Portion of chain having endocysts, — *—. 



(Cape Goza, Aug., 2, 1904). 



9. The same seen from the narrower girdle surface, ^. 



(Tateyama). 



10. Valvular view of the same, - a " () . ( ,, ). 



11. Another specimen, highly magd. (Cape Goza). 

 11 a. One of chain infested by Richelia intracellular is, ^. 



(Cape Goza). 

 11 b,c. 2 filaments of Richelia intracellularis, — x — . ( ,, ,, ). 



