the echinoid fauna from japan and adjacent regions part i

Explanation of Plate 10
(Size as stated)
Fig. 1. Echinometra hondoana NISIYAMA, n. sp. Aboral view of a part of aboral surface x 2
(holotype, IGPS colI. cat. no. 737333, from the Kozai formation of Miyagi Prefecture).
Figs. 2-3. Echinostrephus aciculatulll A. AGASSIZ, 1863. 2, oral vidw of fossil, x 1.3 (IGPS
colI. cat. no. 73763, from the Ryukyu Limestone of Ishigaki·jima, Ryukyu Islands) ; 3,
side view of the same, xL 3.
Figs. 4-6. Echinometra mat/wei (BLAINYILLE, 1825). 4, aboral view of fossil, x 1 (IGPS colI.
cat. no. 73764, from the Ryukyu Limestone of Ishigaki-jima, Ryukyu Islands) ; 5, oral
view of the same, xL 3; 6, side view of the same, xL 3.
Fig. 7. Echinolampas yoshiwarai DE LORIOL, 1902. Aboral view of specimen, xl (IGPS colI.
cat. no. 73794, from the Tsugawa formation of Niigata Prefecture).
Figs. 8-10. Parasalenia maria/we COOKE, 1957. 8, aboral view of secimen, x 2 (IGPS colI. cat.
no. 73736, from the Donney formation of Saipan Island, Mariana Islands) ; 9, side view
of the same, x 2; oral view of the same, x 2.
Figs. 11-12. Echinolampas bombos NISIY AMA, n. sp. 11, aboral view of paratype, x 2 (IGPS colI.
cat. no. 73726-2, from the Eocene of Bonin Islands; 12, oral view of the same, x 2.
Figs. 13-14. Planilampas sternopetala (A. AGASSIZ and H. L. CLARK 1907). 13, aboral view of
Recent specimen, x 1 (for comparison) (from Tanabe Bay, Wakayama Prefecture) ; 14,
oral view of the same, x 1 (for comparison).
Photo by K. KUMAGAI