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HISTORY.
11

abandoned Artedi's order of Branchiostegi, but substituted a scarcely more natural combination by joining it with Artedi's Chondropterygians, under the name of "Amphibia nantes."

His classification of the genera appears in the 12th edition of the "Systema," thus—

Amphibia Nantes.

Spiraculis compositis.

Petromyzon.
Raia.
Squalus.
Chimæra.


Spiraculis solitariis.

Lophius.
Acipenser.
Cyclopterus.
Balistes.
Ostracion.
Tetrodon.
Diodon.
Centriscus.
Syngnathus.
Pegasus.


Pisces Apodes.

Muræna.
Gymnotus.
Trichiurus.
Anarhichas.
Ammodytes.
Ophidium.
Stromateus.
Xiphias.


Pisces Jugulares.

Callionymus.
Uranoscopus.
Trachinus.
Gadus.
Blennius.

Pisces Thoraci.

Cepola.
Echeneis.
Coryphæna.
Gobius.
Cottus.
Scorpæna.
Zeus.
Pleuronectes.
Chætodon.
Sparus.
Labrus.
Sciæna.
Perca.
Gasterosteus.
Scomber.
Mullus.
Trigla.


Pisces Abdominales.

Cobitis.
Amia.
Silurus.
Teuthis.
Loricaria.
Salmo.
Fistularia.
Esox.
Elops.
Argentina.
Atherina.
Mugil.
Mormyrus.
Exocœtus.
Polynemus.
Clupea.
Cyprinus.