128 



K. OKAMURA. 



0.052 mm. ; thickness in side view 0.026 mm. ; length of apical horn 

 O.04 mm. 



Loc. in Japan : Tateyama in Prov. Böshyü (May, 1906). 

 Other known loc. : Atlantic and Indian Oceans. 



12. C. contortimi (Gourr.) Cleve. (Pl. III., fig. 4). 



Cleve, 1900 a, p. 14 ; Pl. VIL, fig. 10. — Gourr., 1883, p. 35 ; Pl. II. 

 fig- 33 \C- gibberum var. contortimi) — Okam. and Nishikawa, 1904, 

 p. 124; Pl. VI., fig. 9. 



Loc, in Japan: Prov. Tosa; Kushimoto in Prov. Kii (Nishikawa). 

 Other known loc. : Mediterranean Sea ; Indian and Pacific 

 Oceans ; Also, west of Africa and east of South America. 



13. C. gibbemm Gourr. (Pl. III., fig. 3). 



Gourr., 18S3, p. 34; Pl. II., fig. 35.— Id., p. 36; Pl. II., fig. 34 



(C. gibberum var. sinistrimi). 

 Height as well as breadth of body about 0.09 mm., as measured on 

 the specimen figured in figs. 3 b and c. 

 Loc. in Japan : Prov. Tosa. 

 Other known loc. : Naples. 



14. C. hexacanthum Gourr. var. contortimi Lemm. (PI. III., fig. 9). 

 Lemm., 1899, p. 347 ; Pl. II., figs. 20-21. 



Loc. in Japan : Prov. Tosa. 



Other known loc. : Atlantic Ocean (Barber). 



15. C. neglectnm Ostf. ? (Pl. IV, fig 22). 

 Ostf, 1903, p. 584 ; fig- 135 ? 



Loc. in Japan : Prov. Isé. 

 Other known loc. : Faeröes Isl. 



16. C. macroceras Ehrb., f. (Pl. IV. fig. 19). 



The individual observed resembled much that which is figured in Ostf. 

 and Schm., 1901, p. 167, fig. 19. 



Loc. in Japan : Prov. Shima. 



17. C. macroceras Ehrb., f. ? (Pl. IV., fig. 20). 



The curvature and direction of antapical horns are as in typical C. 

 macroceras \ but, I am not sure if the latter has the apical horn and 



