The first set included Desmonema annasethe (now Cyanea annasethe), a particularly striking jellyfish that Haeckel observed and described shortly after the death of his wife Anna Sethe.
Dalam set pertama diantaranya adalah Desmonema annasethe (sekarang Cyanea annasethe), ubur-ubur yang sangat menakjubkan bahwa Haeckel mengamati dan segera mendeskripsikan setelah kematian istrinya Anna Sethe.