Note 2417 — BOOK IX. THE NATURAL HISTORY OF FISHES.
John Bostock translation
On the other hand, Isidorus says that the mullet-coloured shoes were so called from the colour of the fish, which, indeed, is most probable. These shoes were made of a kind of red Parthian leather, probably not unlike our morocco leather. Festus seems to say that they were worn in general by all the patricians; but the passage of Varro which he quotes, only shows that they were worn by the curule magistrates, the consul, prætor, and curule ædile.