Description: English: Alder J. & Hancock A. (1845-1855). A monograph of the British nudibranchiate Mollusca: with figures of all the species. The Ray Society, London. Published in 8 parts: Part 4 Fam. 3 Plate 13 [1848]. Eolis drummondi Thompson W., 1844 synonym Facelina bostoniensis (Couthouy, 1838) accepted name. Date: 1848. Source: https://www.biodiversitylibrary.org/item/131598#page/334/mode/1up. Author: Albany Hancock.