134 



K. OKAMURA. 



Loc. in Japan : Prov. Tosa. 

 Other known loc. : Atlantic Ocean. 



36. Phalacroma Mitra Schüft. (Pl. V., fig. 43.) 



Schutt, 1S96, fig. 38 A and C— Murr, and Whitt., 1899, Pl. XXXI., 

 fig. 7- 



Height of body in the specimen figured measures 0.08 mm. ; length 

 of sagittal axis, ca. 0.07 mm. 



Loc. in Japan : Prov. Tosa. 



Other known loc. : Atlantic Ocean. 



37- P. sp. (Pl. V., fig. 42). 



This species seems much to resemble P. minutimi Cleve (Atlantic 

 Plankton Organism., p. 18, Pl. VIII., figs, io-il); it measures some- 

 what less than 0.056 mm. in height and 0.052 mm. in breadth. 



Loc. in Japan : Tateyama in Prov. Böshyü (June 23, 1906). 



38. P. sp. (PL IV., fig. 26). 



The species I am unable to determine with the literature at my 

 disposal. Its size is as follows : height of body 0.09 mm. ; breadth 

 0.075 nim., and thickness 0.07-0.075 mm. P. porodictyum Stein? 

 Loc. in Japan : Prov. Tosa. 



39. Proro centrum micans Ehrb. ? (Pl. IV., fig. 28). 



The size of the specimen figured is as follows : length of body 0.057- 

 0.06 mm.; breadth 0.017-0.02 mm; length of spine 0.0087-0.015 

 mm. 



Loc. in Japan : Prov. Tosa. 



V. Murracytae. 



40. Pyrocystis pseudonoctiluca Murr. (Pl. V., fig. 29). 



Murr., 1895, fig. 57. — Schutt, 1896, fig. 2 A. — Blackman, 1902, p. 



179; Pl. IV, figs. 1-5. 

 Diameter : 0.418 mm. 



Loc. in Japan : Prov. Böshyü (May-Aug.) 



