I 26 



OKA MURA AND NISHIKAWA : 



Ceratium furca Duj. 



(Fig. 15) 



Cleve, '02, p. 26.— '01, p. 218— '97 a, p. 301.— '97 b, p. 25. 



Schröder, '01, p- 17. 



Hensen, '87, Taf. VI, fig. 63-64. 



Gourret, '83, p. 50—51. Pl. IV, fig. 60 — 62 (C. furca var. singularis, var. 

 tertia and var. media Gour.) 



Loc. in Japan : Kushimoto in Prov. Kii (T. Nishikawa coll.) ; Shi- 



rahama in Prov. Böshyü (Okam. coll ). 

 Other known loc. : The Atlantic and the Mediterranean. 



Ceralium belone ci. 



(Fig. 16). 



Cleve, '02, p. 25.— '01, p. 211.— '03 b, p. 13, Pl. VII, fig. 13. (C. [furca 

 var. ?] belone cl.). 



Loc. in Japan : Kushimoto in Prov. Kii (T. Nishikawa coll.). 

 Other known loc. : W. and E. tropical Atlantic. 



Ceratium furca var. ? 



(Fig. 17). 



Schutt, '93, p, 266, fig. 76 III ? 

 Bùtschli, '81, Taf. LUI, fig. 8 ? 



Loc. in Japan : Kushimoto in Prov. Kii ( T. Nishikawa coll.). 



Ceralium furca var. ? 



(Figs. 18, 19). 



Gourret, '83, p. 46, Pl. IV, fig. 63 ? 



Loc. in Japan : Kushimoto in Prov. Kii (T. Nishikawa coll.); Bö- 

 shyü (Okam. coll.) 



