Plate 66.
All figures are Cyanea capillata var. fulva.
Date 25 August 1910
Source Medusae of the world, vol. 3. https://archive.org/stream/medusaeofworld03mayo?ref=ol#page/n157/mode/2up
Author Alfred Goldsborough Mayor (edited by Ruthven)
Source: https://commons.wikimedia.org/wiki/File:Medusae_of_world-vol03_pl66_Cyanea_capillata_fulva.jpg

The lion's mane jellyfish (Cyanea capillata), also known as the giant jellyfish or the hair jelly, is the largest known species of jellyfish. The range of Cyanea capillata is confined to cold, boreal waters of the Arctic, northern Atlantic, and northern Pacific Oceans.