146 



K. OKAMURA. 



Explanation of Figures in PI. III. — VI. 



Plate III. 



Fig. I. Ceratium vultur Cleve. From Prov. Tosa. 



a, individuals in a chain ; X97. 



b, the uppermost individual of above ; x 220. 



c, tvvo consecutive individuals from the lower end of the 



chain ; x 220. 

 I 7 ig. 2. C. patentissiraum Ostf. and Schm. 



a, from Prov. Böshy ü ; x 97 . 



b, from Prov. Tosa ; x Ç6. 



c, portion of the same specimen as more highly magni- 



fied ; X 97. 



Fig. 3. C. gibberum Gourr. From Prov. Tosa. 



a, a specimen ; X 97. 



b, another specimen in frontal view ; x 220. 



c, same as fig. b. in dorsal view ; x 220. 



d, still another specimen ; x 220. 



c, same as c, viewed from the apex ; x 220. 

 Fig. 4. C. contortimi (Gourr.) Cleve. From Prov. Tosa. 



a, dorsal view ; x 220. 



b, ventral view of another specimen ; x 220. 



Fig- 5- C. gravidum Gourr. Body seen from side; X97. From 

 Prov. Böshyü. 



P'ig. 6. C. ranipes Cleve. From Prov. Böshyü. x ca. 220. 

 Fig. 7. C. lineatimi v. longisetum Ostf. and Schm. 



a and two specimens from Prov. Shima ; x 390. 

 Fig. 8. C. limiilus Gourr. From Gulf of Tateyama in Prov. Böshyü. 

 a, dorsal view ; X 390. 



side view of same ; x 390. 

 Fig. 9. C. hexacanthum Gourr. v. contortimi Lemm. From Prov. 

 Tosa. 



