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ABRANCHIA.

selves on the approach of winter in the mud at the bottom. In the process of clearing marshy ground, cleansing ponds, &c., immense numbers are sometimes found thus concealed at a depth of three or four feet from the surface. Dr. Harlan was informed by Major Wace, that great numbers in a state of torpidity were thrown up in the winter season, by persons engaged in digging near a street in Pensacola. They were burrowing in the soft mud, two or three feet deep.

TWO-TOED AMPHIUMA.