Pl. [3], Fig. 10.
ELABORATI
COSCINODISCUS LEWISIANUS GREV.
Valves elliptical, major axis a little more than twice the minor. From a point, usually near one side, radiate rows of granules in lines nearly parallel to the major axis. Border broad, with distinct striæ.
Great Sedge Island, N. J. (artesian well), and in outcrops later than the Miocene, where it is usually found.
Pl. [3], Fig. 5.
2. ACTINODISCEÆ
ACTINOPTYCHINÆ
Valves divided into sectors alternately elevated and depressed.
(1) Actinoptychus.—Sectors plane.