142 
45 — Biddulphia rhombus (Ehrenberg) W. 
Smith, 1844. 
46 - Biddulphia sinensis Greville, 1866. 
47 — Bellerochea malleus (Brightwell, 1858). 
48— Lithodesmium undulatum Ehrenberg, 
1840. | 
49 — Ditylium brightwelli (West, 1860). 
50 — Thallassiothrix nitzschioides Gruenow, 
1862. 
51 — Asterionella japonica Cleve, 1882. 
Silicoflagellata. 
52— Dictyocha fibula Ehrenberg, 1839. 
