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Esox reticulatus, Lesueur. Pickeral. Milwaukee.
Salmo fontinalis, Mitchell. Brook Trout. Northern Wisconsin.
amethystus, Mitchell. Lake Trout. Milwaukee.
Coregonus albus, Lesueur. White Fish. Milwaukee.
Amia calva. Dog Fish. Milwaukee.

Cartilaginous.

Acipenser rubicundus, Lesueur. Sturgeon. Milwaukee. L. Winnebago.

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Mollusca.

Order Gasteropoda.

Ancylus rivularis, Say, Milwaukee and Rock Rivers.
parallelus, ? Haldmann, Twin rivers. Milwaukee river. Muskego L.
diaphanus, Hald. Milwaukee river.
Vitrina pellucida, Drap. N.W. Territory, (Mr. Say.)
Helix albolabris, Say. Milwaukee. Menasha. Two Rivers.
alternata, Say. Milwaukee. Two Rivers.
arborea, Say. Milwaukee. Madison. Two Rivers.
chersina, Say. N.W. Territory, (Mr. Say.)
fraterna, Say. Manitowoc.
harpa, Say. N.W. Territory, (Mr. Say.)
hirsuta, Say. Milwaukee.
labyrinthica, Say. Milwaukee. Two Rivers.
lineata, Say. Milwaukee. Two Rivers.
ligera, Say. N.W. Territory, (Mr. Say.)
monodon, Racket. Milwaukee. Manitowoc.
Multilineata, Say. Milwaukee. Madison.
perspectiva, Say. Milwaukee. Madison. Two Rivers.
profunda, Say. Milwaukee. Manitowoc.
porcina, Say. N.W. Territory, (Mr. Say.)
Pupa armifera, Say. Milwaukee.
corticaria, Say. Milwaukee.
ovata, Say. [P. Modesta, Immatine.] Milwaukee.
Succinea obliqua, Say. Milwaukee. Two Rivers.
avara, Say. N.W. Territory, (Mr. Say.)
Bulimus lubricus, Brug. Milwaukee. Madison.
Planorbis armigerus, Say. Milwaukee River. Muskego Lake.