H. H. GRAN AND K. VENDO. 



M.-N. Kl. 



Sect. 9. Lacinio!<a Ostenf. 



Chcietoceras distans Cleve. 



Cleve: 1873 b, p. 9, PI. 2, 

 fig. II. — Schröder: 1906, 

 P- 335- ~ Okamura: 1907, 

 p. 98, PI. _i, fig.s. 40—43. 

 The present species has a 

 close resemblance to (.. laciuio- 

 swn Schutt, so that Cleve, 

 Ostenfeld, etc., have often 

 confused them. The two spe- 

 cies ma}' be easily distinguish- 

 ed from each other by the 

 resting-spores. The suture- lines 

 of the girdle-bands, moreover, 

 are convex towards the fora- 

 mina in the present species, 



Fi£ 



10. 



(7. 



b. 



Chaetoceras distans Cleve. 

 Part of a chain from a specimen from 

 Bay of Bengal. Water preparation. A 

 drop of iodine green is used to make 

 the suture-lines distinct. X 360. 

 Spores from a specimen from Misumi. 

 Water preparation. X 360. 



while in C. laciniosum Schutt they are par- 

 allel; and the terminal horns lie in one plane 

 in the former, and are twisted in the latter. 

 Loc. Shima Prov. (Okamura). Misaki; 

 Misumi (Yendo). Enoshima; Akashi ; 

 Formosa Channel (Schröder). 



Chaetoceras laciniosum Schutt. 

 Schutt: 1895, p. 38, fig. 5 a— c. — 

 Gran: 1897 a, p. 17, PI. i, figs. 4—7. 

 — Do.: 1906, p. 82, fig. 99. — Osten- 



Fig. 1 1 . C/iacioceras laciiiiosiim 

 Schutt. 

 The minute puncta on the 

 setæ are not shown here. 

 Drawn from Cleve and Möl- 

 ler's Diat. No. 307. Specimen 

 feld: 1899, p. 53. — Meunier: 1910, from Yeddo Bay. X 360. 

 p. 235, PI. XXVI, figs. 24-3'. 



= C. distans Cleve: 1894, p. 14, PI. 2, fig. 3 (non alior). 

 = C. distans Ostenfeld: 1902, p. 235, fig. 13. 

 = C. commiitatum Cleve: 1896 b, p. 28, figs. 9, 10. 

 = C. Ostenfeldii Cleve: 1900 a, p. 21, PI. 8, fig. 19. — 

 Ostenfeld: 1900, p. 51. 



