1. 2. Sea Dragon (Pegasus Draconis) 3. Sea-Horse (Syngnathus Hippocampus) 4. Sea-Pipe (Syngnathus Pelagicus) from Ichtylogie, ou Histoire naturelle: génerale et particuliére des poissons (1785–1797) by Marcus Elieser Bloch.
Original from New York Public Library. Digitally enhanced by rawpixel.