PLANKTON OF THE JAPANESE COAST. 



135 



Other known loc. : Red Sea ; Indian and Pacific Oceans ; tropical 

 Atlantic. 



41. P. flisiformis Murr. (Pl. V., fig. 30). 



Murr., 1895, fig. 57 c. — Blackman, 1902, p. 183 ; Pl. IV., fig. 9. 

 Dimensions : 0.9 mm. by 0.25 mm. 



Loc. in Japan : Prov. Böshyü (May) ; Tosa. 



Other known loc. : Red Sea ; Atlantic Ocean. 



42. P. lanceolata Schröder. (Pl. V., fig. 31). 



Schröder, 1901, p. 13 ; Taf. I., fig. II. — Blackman, 1902, p. 187; 

 Pl. IV., fig. 9. ? 



Length of body in the specimen figured measures 1.033 mm. ; 

 breadth in the broadest part, 0.09 mm. ; breadth in the narrower part 

 0.03 mm. 



Blackman had remarked that he has not discovered any difference 

 between this species and P. fusiformis. 

 Loc. in Japan : Prov. Tosa. 

 Other known loc. : Naples. 



43. P. lunula Schütt. (Pl. V., fig. 32). 



Schutt, 1896, p. 3 ; fig. 2. B-F. — Blackman, 1902, p. 184; Pl. IV., 

 fig. 8. — Hensen, 1887, p. 78 ; Taf. IV., fig. 30 (Cyst oi Gy 111110- 

 di nini iì). 



Breadth of body in the specimen represented in fig. 32 a. measures 

 0.055 mm - 



Loc. in Japan : Provs. of Tosa and Isé. 



Other known loc. : Atlantic and Indian Oceans ; Mediterranean Sea 

 and Red Sea. 



44. P. hamulus Cleve. (Pl. V., fig. 33). 



Cleve, 1900 a, p. 19; Pl. VII., fig. 23. — Blackman, 1902, p. 184; 

 Pl. IV, fig. 5-7. 



In my material, two individuals form an entire circle measuring 0.45 

 mm. in diameter and 0.02 mm. in thickness of horn. 

 Loc. in Japan : Prov. Tosa. 

 Other known loc. : Atlantic and Indian Oceans. 



