The are short anonymous Latin summaries of the 44 books of the lost of Pompeius Trogus. The are similar in character to the to Livy's .
The are of uncertain date and authorship. They were transmitted together with Justin's Epitome of the but were not written by Justin. They probably circulated independently before becoming attached to Justin's Epitome. Since they contain information not found in Justin, they are not themselves derivative of his work but are an independent source fo the lost . They represent a different perspective from Justin's on what was important in Trogus' work, but their terseness limits their utility as a check on Justin's methods of epitomization, his Epitome being much longer. From the , it can be seen that Justin often omits Trogus' geographic and ethnographic material.