Illustrated Companion to the Latin Dictionary/Luna

This article incorporates text from a publication now in the public domain: Rich, Anthony (1849). The illustrated companion to the Latin dictionary, and Greek lexicon. p. vi. OCLC 894670115. https://archive.org/details/illustratedcompa00rich. 

LUNA (ἐπισφύριον). An ornament in the shape of a half moon, which the Roman senators wore upon their boots. (Juv. vii. 193. Stat. Sylv. v. 2. 28.) Considerable difference of opinion formerly existed amongst scholars respecting the actual meaning of this term; but it is now generally admitted to have been a buckle of ivory or silver, which joined together the sides of the shoe, just above the ankle (Viscont. Inscript. Triop. p. 83. seqq.), as the Greek name implies, and as shown by the right hand-figure in the annexed engraving (Luna/1.1), from a statue published by Balduinus (de Calceo, p. 69.), after Casali. The left-hand{TR: "right-hand" -> "left-hand"} figure is copied from an ivory ornament found in the Roman catacombs, which is believed to be an original senatorial luna.

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  Luna/1.1