<Li> Aptera: Lepisma (silverfish), Podura (springtails), Termes (termites), Pediculus (lice), Pulex (fleas), Acarus (mites & ticks), Phalangium (harvestmen), Aranea (spiders), Scorpio (scorpions), Cancer (crabs, lobsters and kin), Monoculus (water fleas & kin), Oniscus (woodlice), Scolopendra (centipedes) & Julus (millipedes) </Li> <P> Linnaeus described his "Vermes" as: Animals of slow motion, soft substance, able to increase their bulk and restore parts which have been destroyed, extremely tenacious of life, and the inhabitants of moist places . Many of them are without a distinct head, and most of them without feet . They are principally distinguished by their tentacles (or feelers). By the Ancients they were not improperly called imperfect animals, as being destitute of ears, nose, head, eyes and legs; and are therefore totally distinct from Insects . </P> <P> Linnaeus divided the "Vermes" based upon the structure of the body, into the following orders and genera: </P> <Ul> <Li> Intestina: Gordius (horsehair worms), Furia, Lumbricus (earthworms), Ascaris (giant intestinal roundworms), Fasciola (liver flukes), Hirudo (leeches), Myxine (hagfishes), Teredo (shipworms) </Li> <Li> Mollusca: Limax (terrestrial slugs), Doris (dorid nudibranchs), Tethys (tethydid sea slugs), Nereis (polychaete worms), Aphrodita (sea mice), Lernaea (anchor worms), Priapus (priapulid worms & sea anemones), Scyllaea (scyllaeid sea slugs), Holothuria (salps & Portuguese Man o' War), Triton (triton shells), Sepia (octopuses, squids, & cuttlefishes), Medusa (jellyfishes), Asterias (starfishes), Echinus (sea urchins) </Li> <Li> Testacea: Chiton (chitons), Lepas (barnacles), Pholas (piddocks & angelwings), Myes (soft - shell clams), Solen (saltwater clams), Tellina (tellinid shellfishes), Cardium (cockles), Donax (wedge shells), Venus (Venus clams), Spondylus (thorny oysters), Chama (jewel box shells), Arca (ark clams), Ostrea (true oysters), Anomia (saddle oysters), Mytilus (saltwater mussels), Pinna (pen shells), Argonauta (paper nautiluses), Nautilus (nautiluses), Conus (cone snails), Cypraea (cowries), Bulla (bubble shells), Voluta (volutes), Buccinum (true whelks), Strombus (true conches), Murex (murex snails), Trochus (top snails), Turbo (turban snails), Helix (terrestrial snails), Neritha (nerites), Haliotis (abalones), Patella (true limpets), Dentalium (tusk shells), Serpula (serpulid worms) </Li> <Li> Lithophyta: Tubipora (organ pipe corals), Millepora (fire corals), Madrepora (stone corals) </Li> <Li> Zoophyta: Isis (soft corals), Gorgonia (sea fans), Alcyonium (tunicates), Tubularia (Tubularia), Eschara (Bryozoa), Corallina (coralline algae), Sertularia (Bryozoa), Hydra, Pennatula (sea pens), Taenia (tapeworms), Volvox </Li> </Ul>

How many species were named in the 10th edition of systema naturae