References

Branson, B.A 1972. Hemphillia dromedarius, a new arionid slug from Washington. Nautilus, 85:100-106

Branson, B.A. 1975. Hemphillia pantherina, a new arionid slug from Washington. The Veliger, 18: 93-94.

Burch, J.B. & Pearce, T.A. 1990. Terrestrial Gastropoda. Pp 201-309 in Dindal, D.L., (ed.), Soil Biology Guide. John Wiley & Sons, Inc, New York.

Cameron, R.A.D. 1986. Environment and diversities of forest land snail faunas from Coastal British Columbia. Malacologia, 27:341-355.

Cameron, R.A.D., Jackson, N. & Eversham, B. 1983. A field key to the slugs of the British Isles. Field Studies, 5: 807-824.

Forsyth, R.G. 1999. Distributions of nine new or little-known exotic land snails in British Columbia. The Canadian Field-Naturalist, 113:559-568.

Kelley, R., Dowlan, S., Duncan, N. & Burke, T. 1999. Field guide to survey and manage terrestrial mollusk species from the Northwest forest plan. USDI Bureau of Land Management, Oregon. 114 pp.

Kerney, M.P. & Cameron, R.A.D. 1979. A field guide to the land snails of Britain and North-west Europe. Collins, London. 288pp.

Kozloff, E.N. & Vance, J. 1958. Systematic status of Hemphillia malonei. Nautilus, 72:42-49.

Kozloff, E.N. 1976. Plants and animals of the Pacific Northwest, an illustrated guide to the natural history of western Oregon, Washington, and British Columbia. University of Washington Press, Seattle. ix + 264pp.

Leonard, W. P., Chichester, L. & Ovaska, K. In press. Prophysaon du bium Cockerell, 1890, the papillose taildropper (Gastropoda: Arionidae): Distribution and anatomy. Nautilus.

Leonard W.P. & Ovaska, K. 2002. Reproduction of the Malone jumping-slug, Hemphillia malonei Pilsbry, 1917 (Mollusca: Gastropoda: Arionidae): Laboratory observations. Nemouria, 45:1-14.

Leonard W.P. & Ovaska, K. 2003. Jumping-slugs!. Wings, 1:9-13, 17.

McGraw, R., Duncan, N. & Cazares, E. 2002. Fungi and other items consumed by the blue-gray taildropper slug ( Prophysaon coeruleum) and the papillose taildropper slug ( Prophysaon dubium). Veliger, 45:261–264.

Myers, L.D. 1972. Primary and secondary influencing agents on gastropod populations of three habitats in Washington State. Sterkiana, (47):39-45.

Ovaska, K., Chichester, L., Reise, H., Leonard, W.P. & Baugh, J. 2002. Anatomy of the dromedary jumping-slug, Hemphilliadromedarius Branson, 1972 (Gastropoda: Stylomatophora: Arionidae), with new distributional records. Nautilus, 116(3):89-94.

Ovaska, K., Leonard, W.P., Chichester, L., Burke, T., Sopuck, L. & Baugh, J. In review. Prophysaon coeruleum Cockerell, 1890, blue gray taildropper (Gastropoda: Arionidae): New distributional records and reproductive anatomy. Submitted to the Nautilus March 16, 2003.

Pilsbry, H.A. 1939-1948. Land Mollusca of North America (north of Mexico). Academy of Natural Sciences of Philadelphia Monograph 3, Part 1, vol. 1 (1939): i-xviii, 1-574, i-ix; Part 1 vol. 2 (1940): i-viii, 575-994, i-ix; Part 2 vol. 1 (1946): i-viii, 1-520; Part 2 vol. 2 (1948): i-xlviii, 520-1113.

Reise, H., Hutchinson, J.G., Forsyth, R.G. & Forsyth, T.J. 2000. The ecology and rapid spread of the terrestrial slug Boettgerilla pallens in Europe with reference to its discovery in North America. The Veliger, 43:313-318.

Rollo C.D. & Wellington, W.G. 1975. Terrestrial slugs in the vicinity of Vancouver, British Columbia. Nautilus, 89:104-115.

Roth, B. 1991. A phylogenetic analysis and revised classification of the North American Haplotrematidae (Gastropoda: Pulmonata). American Malacological Bulletin, 8: 155-163.

Turgeon, D.D., Quinn, J.F., Jr., Bogan, A.E., Coan, E.V., Hochberg, F.G., Lyons, W.G., Mikkelsen, P.M., Neves, R.J., Roper, C.F.E., Rosenberg, G., Roth, B., Scheltema, A., Thompson, F.G., Vecchione, M. & Williams, J.D. 1998. Common and Scientific names of aquatic invertebrates from the United States and Canada: Mollusks, 2 nd edition. American Fisheries Society Special Publication 26. Bethesda, Maryland. 526 pp.

Wiktor, A. 1989. Limacoidea et Zonitoidea nuda, ślimaki pomrowiokształtne (Gastropoda: Stylommatophora). Fauna Polski, 12:1-206.