W. E.  Collinge, ?On the anatomy and systematic position of some recent additions to the British Museum collection of slugs?, The Journal of Malacology, vol. 7, pp. 77-85, 1899.

W. E.  Collinge, ?On the anatomy and systematic position of some recent additions to the British Museum collection of slugs?, The Journal of Malacology, vol. 7, pp. 77-85, 1899.