Culcita novaeguineae - Culcita novaeguineae

Japanese: マンジュウヒトデ(饅頭海星) - マンジュウヒトデ（英語表記）Culcita novaeguineae

An echinoderm of the Asteroidea class, Asteroidea. Also known as sea urchin. It inhabits coral reefs south of Okinawa, in the Western Pacific, and in the Indian Ocean. Its shape is quite different from that of other starfish, and it is quite heavy. Its body is pentagonal, nearly circular, and about 20 cm in diameter. Its back is rounded and bulging, and is rough all over with coarse granules, with light and dark circular spots arranged in concentric circles on a blue, green, or yellow background. The ventral surface of the body is yellowish brown and flat, but is densely covered with rather large granules. There are five clear radial grooves centered on the mouth.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:

ヒトデ綱コブヒトデ科の棘皮（きよくひ）動物。別名ウミバコ。沖縄以南，西太平洋，インド洋のサンゴ礁にすむ。一般のヒトデ類と著しく異なった形をしていて，かなり重い。体は直径20cmほどのほぼ円形に近い五角形。背部は丸く膨らみ，あらい顆粒（かりゆう）が一面にあってざらざらし，青色，緑色，黄色などの地に濃淡の円形斑紋が同心円状に並んでいる。体の腹面は黄褐色で平たいが，やや大きな顆粒が密生する。口を中心にして，はっきりした5本の放射状の歩溝がある。

出典　株式会社平凡社世界大百科事典第２版について　情報

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