A review of the siphonophore species mentioned in Haeckel’s (1888b) Challenger Monograph

Pugh, Philip. 2019 A review of the siphonophore species mentioned in Haeckel’s (1888b) Challenger Monograph. Zootaxa, 4683 (1). 1-32. https://doi.org/10.11646/zootaxa.4683.1.1