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Bagnall, R.S., 1919. Records of some Siphonaptera (Fleas) from Lancashire. Lancashire & Cheshire Naturalist 11: 263-264., p.15.

Bagnall, R.S., 1919. The Siphonaptera (Fleas) of Northumberland and Durham. Transactions of the Natural History Society of Northumberland, Durham and Newcastle-Upon-Tyne 5(2): 181-198., p.16.

Bagnall, R.S., 1930. Records of some ectoparasites of the otter and badger, including a rare Trichodectes previously unknown as British. The Vasculum 16(1) : 6-9., p.17.