Valve linear, with sub-cuneate ends, slightly constricted in the middle; pseudoraphe very narrow; costæ, 6-7 in 10 µ; transverse striæ about 26 in 10 µ, punctate. L. 75 µ.
According to De Toni (p. 598), this form is a Nitzschia. It has, however, a narrow pseudoraphe.
Pavonia, N. J., artesian well. Rare.
Pl. [35], Fig. 11.
Section 3
SURIRELLA FASTUOSA EHR.
Valve ovate; costæ about 1-2 in 10 µ, dilated at the margin and contracting at about one-fourth the distance toward the middle; area, ovate-lanceolate; pseudoraphe, narrow and indistinct; intercostate striæ more evident near the margin, 19 in 10 µ, becoming again evident in a narrow band about one-half the distance to the pseudoraphe. L. 50-120 µ.
Along the coast. More common southward.
Pl. [35], Fig. 1.
SURIRELLA FEBIGERII LEWIS