I’ve already posted a translation of what Devreesse said about material by Eusebius of Caesarea in catenas on Matthew, Mark and John. Here’s what he said about material on Luke.
Eusebius. — Cardinal Mai has given us several editions of the fragments of Eusebius contained in the catenas on St. Luke. The first attempt is found in Script. vol. 1, 1, p. 107-178, based on Ms. Vatican gr. 1933 and the Nicetas in Vatican gr. 759 (in the second edition of the first volume of Scriptores, Rome, 1825-1831, p. 143-160, ms. Vatican gr. 1611 was used as well as 759).
For a new edition, the cardinal made use of Vatican gr. 1611 (A), Vatican Palatinus gr. 20 (B), of Macarius Chrysocephalus (E), of Vatican gr. 1642 (H), and Vatican Ottoboni gr. 100 (L). The texts thus collected appeared in Nov. Patr. Bibl. vol. 4, p. 159-207, Rome, 1847, and were reproduced in the Patrologia Graeca vol. 24, col. 529-606. Again it is from the catena of Nicetas that the important pieces of the gospel questions of Eusebius (Letters To Marinus and To Stephanus) gathered in P.G. vol. 22 col. 952-965 were taken.
But were all the pieces taken from Vat. gr. 1933 really by Eusebius? It could be that some really belong to other authors, Mai having often printed under the name of Eusebius paragraphes which really derived from someone else. On the other hand it must be noted that the citations from Vat. gr. 1933, when compared with Nicetas, often have the appearance of summaries. Are we dealing with a commentary on Luke? It does not seem so; some pieces bear an indication of their origin: ἐκκλησιαστικῆς ἰστορίας, εὐαγγελικῆς θεοφανείας, περὶ τοῦ πάσχα. Cf. Sickenberger, Titus von Bostra, p. 86-87.
Let us note again that Eusebius is named six times in the catena of pseudo Peter of Laodicea which is at the end of ms. Vindobonensis gr. 117 (Rauer, Der dem Petrus von Laodicea zugeschriebene Lukaskommentar, Munster, 1920, p. 39).
I hope to add Devreesse’s introductory remarks to all the catenas on Luke later.