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A History of the County of Somerset
… Shirehampton; The Pill, Clevedon stagnalis (Bast.). River mouths on the coast Bithynia tentaculata (Linn.) … Dreissensia polymorpha (Pall.) Unio pictorum (Linn.) River Avon; River Brue; Bath Canal tumidus, Retz. River Avon; River Brue, …
A History of the County of Somerset
… northern part of the county on the southern side of the river Avon, which here constitutes the boundary line between … from Lundy Island, and it is highly probable that the river crayfish, Potamobius pallipes (Lereboullet), abundant …