Absecon, N. J.
Pl. [29], Fig. 3.
PINNULARIA DACTYLUS VAR. DEMERARÆ CL.
Valve elliptical-lanceolate, with sub-cuneate ends; axial area lanceolate, broad in the middle; median line flexuose; striæ radiate throughout, 6 in 10 µ. L. 150 µ.
Blue clay.
Pl. [29], Fig. 10.
PINNULARIA GENTILIS (DONK.) CL.
Valve linear, with rounded ends; axial area about one-fourth the diameter of the valve; striæ radiate in the middle, convergent at the ends, 7 in 10 µ, crossed by a broad indistinct band.
Fresh water. Not common.
Pl. [29], Fig. 1.