Heroidae

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 8 [1910] Hero formosa (Lovén, 1844). Date: 1910. Source: https://archive.org/stream/british_nudibranchiate_mollusca_pt8_lond/uconn_hbl_ocm01209624#page/n240/mode/thumb. Author: Albany Hancock.