Cockerell, T. D. A. & Collinge, W. E. (1893). A check-list of the slugs. With appendix and notes by Walter E. Collinge. The Conchologist. 2 (7/8): 168-176, 185-232. Birmingham.
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Cockerell, T. D. A. & Collinge, W. E.
1893
A check-list of the slugs. With appendix and notes by Walter E. Collinge