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A History of the County of Somerset
… paper on the subject to the Somerset Archological and Natural History Society in 1851 ( Proceed. pp. 95110). … have since been made to the list given by Mr. Baker, and which is the source whence the present account has been … prefixed to the name indicates a freshwater species and two asterisks denote occurrence in both fresh and salt …
A History of the County of Somerset
… Zoology Molluscs and Insects ZOOLOGY MOLLUSCS NON-MARINE Favoured in its situation and the quality of its soil, the county of Somerset yields a … the predominant order of insects in the present epoch. He estimates the number of species now known at about 150,000, …