Chapter XII: 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.

{128}SURIRELLA FEBIGERII LEWIS

Valve ovate-lanceolate; costæ about 2½ in 10 µ with punctate interspaces extending half the distance toward the median hyaline area, which is divided longitudinally on each side of the narrow pseudoraphe by two longitudinal bands composed of short, transverse, irregular, punctate lines.

Along the coast.

Pl. 36, Fig. 3.