Navicula elegans var. cuspidata Cl.—Valve as in type form but smaller and with rostrate apices; striæ, 10 in 10 µ. L. 82 µ.
Belmar, N. J.
Pl. [31], Fig. 2.
Cleve remarks that the type form is acute and the striæ 9, while the var. cuspidata has 12 striæ in 10 µ. In Fig. 1, Pl. [31], is represented a valve having 9 striæ in 10 µ, but not acute, while Fig. 2, with but slight variation in striæ, is more cuspidate. It is probable there are intermediate variations.
NAVICULA PALPEBRALIS BRÉB.
Valve elliptical-lanceolate, with acute apiculate ends; axial area broad, lanceolate; striæ radiate, lineate, about 11 in 10 µ. L. 60 µ.
Along the coast.
Pl. [31], Figs. 6 and 7.
On Plate [40], Fig. 5, is represented an abnormal form of Navicula in which the central pores are in a line transverse to the longitudinal axis and each raphe is curved in a line which almost returns to the centre. The puncta are in curved lines radiating from the rounded hyaline centre.
Pavonia, N. J., artesian well.