236 i 18 
d. Zool. Stat. zu Neapel Bd. 14, 1900, p. 27, Pl. I, fils; ?¢. rude Leu- 
duger-Fortmorel, ].c. p.37, Pl. VI, f. 1. 
The chromatophore is solitary and in front. 
Rather common: 1(c) — 2(c) — 3(r) — 4(rr) — 5(@r) — 6(+) — 7 (r) 
10 (+). 
Area: Tropical neritic form, noted from Atlantic Ocean, Mediterranean, 
Red Sea, Indian Ocean, Malay Archipelago. 
49, (, javanicum Cleve, Diat. f. the Sea of Java 18738, p. 10, Pl. 2, 
f. 13; Pl. f. the Indian Ocean and the Malay Archip. p.19 and p. 55; 
Leuduger-Fortmorel |]. c. p. 37. 
Fig. 14. Chaetoceras javanicum Cl. Chain in front view, cell in side view (7°). 
This species is, as Cleve has lately 
stated, nearly akin to C. Schiittit Cl., if not 
identical; I have found some spores belonging 
to this species and they are about as the 
spores of C. Schiittii, both valves being spini- 
ferous. It has one chromatophore in front; the 
terminal awns are diverging at an acute angle 
and thickened; the other awns are thin and 
turn off towards the ends of the chains; seen 
Fig. 15, 
Chaetoceras javanicum Cl. ee: 
Chain with SidoRpDres in from the valves they have a characteristic. 
front view (424). curvature as shown in the figure. 
