Front cover image for The oceanic Hydrozoa; a description of the Calycophoridæ and Physophoridæ observed during the voyage of H.M.S. "Rattlesnake," in the years 1846-1850

The oceanic Hydrozoa; a description of the Calycophoridæ and Physophoridæ observed during the voyage of H.M.S. "Rattlesnake," in the years 1846-1850

Print Book, English, 1859
Printed for the Ray Society, London, 1859