Hydrozoa source details
Tuckey, J. K. (1818). A general notice of the animals taken by Mr. John Cranch, during the expedition to explore the source of the River Zaire. Appendix 4 [pp. 407-419]. In: Narrative of an expedition to explore the river Zaire, usually called the Congo, in south Africa, in 1816. John Murray, London. i-lxxxii + 1-498, 14 pls. [Fishes are on pp. 409-410 by W. E. Leach.].
441705
Tuckey, J. K.
1818
A general notice of the animals taken by Mr. John Cranch, during the expedition to explore the source of the River Zaire. Appendix 4 [pp. 407-419]
In: Narrative of an expedition to explore the river Zaire, usually called the Congo, in south Africa, in 1816. John Murray, London
i-lxxxii + 1-498, 14 pls. [Fishes are on pp. 409-410 by W. E. Leach.]
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Velella pyramidalis Cranch in Tuckey, 1818 accepted as Velella velella (Linnaeus, 1758) (original description)