Note 2845 — BOOK IX. THE NATURAL HISTORY OF FISHES. (continued 2)

Cuvier says, that the star-fish, the Asterias of Linnæus, is covered with a callous shell without, and has within only the viscera and the ovaria, apparently without any muscles. Aristotle reckons it among the fishes which he calls ὀστρακοδέρματα, or hard-shelled fish; while, on the other hand, Ælian, Hist. Anim. B. xi. c. 22, reckons it among the μαλακόστρακα, or soft-shelled fish.