Note 2592 — BOOK IX. THE NATURAL HISTORY OF FISHES.

He Latinizes the Greek name, calling it “unguis”—“a nail;” and, according to Varro, they were so called from their resemblance to the human nail. Pliny mentions them again in c. 87 of this Book, and in B. xxxii. c. 53, where he states that they are also called “dactyli,” or “fingers.” Cuvier says, that under this name are meant the pholades, a bivalve shell-fish, which give forth a very brilliant light.