Blaschka Marine Invertebrates: Obelia dichotoma, no. 167 : Obelia sphaerulina, no. 168 : Clytia volubilis : Calycella syringa

Blaschka Marine Invertebrates: Obelia dichotoma, no. 167 : Obelia sphaerulina, no. 168 : Clytia volubilis : Calycella syringa, 122333. The Rakow Research Library Manuscript Collection. https://archivesspace.cmog.org/repositories/3/digital_objects/514 Accessed June 01, 2023.