"Midrash (rabbinic interpretive commentary) Ben Shua": The author of "Seder HaDorot" in Part 3, "Names of the Books", letter Mem, cites a "Midrash Ben Shua" in the name of Mar Rav Hafetz, who wrote: "I found in one book, in the introduction to the book 'Sheltei HaGiborim', it cites 'Midrash Rabbi Akiva with crown letters', etc., and 'Midrash Ben Shua'. Maharatz Chayot, in his book 'Emrei Binah (Understanding)' (page 6b), cited it in the name of 'Seder HaDorot' and considered it a lost midrash. However, in truth, this is not a midrash, and the omission of a single letter misled him. For in the introduction of 'Sheltei HaGiborim', instead of 'Midrash Shua' it should read 'of Shuaib'. This book is called 'Drashot Even Shuaib' or 'Shaar HaDrashot on the Torah' by Rabbi Yehoshua ben Shuaib, first printed in Constantinople between the years 280-282 and a second time in Krakow in the year 333. See 'Otzar HaSefarim' by Ben Yaakov, under 'Drashot', and Galante, citing R. S. Buber in 'HaMelitz' issue 99, 1895.