Note 2637 — BOOK IX. THE NATURAL HISTORY OF FISHES.
John Bostock translation
Even on the “socculus,” or “soccus,” a shoe or slipper which did not require any “obstragulum,” or tie. We find from Seneca, De Ben. B. ii. c. 12, and Pliny, B. xxxvii. c. 6, that Caligula wore gold and pearls upon his socculi.