46 LAND AMD FRESH WATER MOLLUSKS 



to A. campestris as a variety by some authors, but it is at least the 

 only form of campestris known in the north and seems distinct enough 

 to be recognized as a species. 



Agriolimax berendti Strebel. 



Limax berendti Strebel and Pfeffer, Mex. 1. u. siissw. Conch., iv, p. 22, 



pi. ix, figs. 10, 12 ; pi. xv, fig. 3, 1880. 

 Limax hemphilli Binney, 3d Suppl. Terr. Moll., v, p. 205, pi. vm, fig. e; 



pi. 1, fig. 13, pi. 11, fig. 3, 1890; Bull. Mus. Comp. Zool., xxn, No. 4, 



p. 166, pi. in, fig. 1, 1892. 



Range. — Guatemala to British Columbia. 



Genus Amalia Moquin Tandon. 

 *Amalia hewstoni Cooper. 



Limax {Amalia) hewstoni Cooper, Proc. Acad. Nat. Sci. Phila., for 1872, p. 



145, pi. in, figs. B1-B5. 

 Amalia hewstoni Pilsbry, Class. Cat., p. 29, 1898. 



Range. — San Diego to Seattle. San Francisco, Calif. ! 



This form may perhaps be an evolution from imported specimens 

 of the European A. gagates. It probably extends into British 

 Columbia. 



Family ARIONID^. 



Genus Prophysaon W. G. Binney. 



Prophysaon andersoni Cooper. 



Arion f andersoni Cooper, Proc. Acad. Nat. Sci. Phila., for 1872, p. 148, pi. 



in, figs. FI-F5. — Pilsbry, op. cit. for 1898, p. 245, pi. x, figs. 18-22 ; 



pi. xi, figs. 28, 29 ; pi. xiii, figs. 59-62 ; pi. xvi, figs. 92-93, 1898. 



Not P. andersoni. — Binney, in 2d Suppl. Terr. Moll., p. 42. 

 Prophysaon andersoni Binney, 3d Suppl. Terr. Moll., v, p. 208, pi. ill, fig. 



1, pi. vii, fig. c, pi. 1, fig. 3, pi. ix, figs. 1, j, 1890. 

 Prophysaon andersoni vars. marmoratum and suffusum Cockerell, The Con- 



chologist, 11, pp. 72, 118. 

 Prophysaon hemphilli Bland and Binney, Ann. Lye. Nat. Hist. N. Y., x, 



p. 295, pi. xiii, excluding fig. 5. 

 Prophysaon pacificum et P. flavum Cockerell, Nautilus, in, p. 111, Feb., 



1890. — Pilsbry, op. cit., p. 246, 1898. 

 Prophysaon andersoni wax. pallidum Cockerell, Nautilus, v, p. 31, July, 1891. 



Range. — San Francisco north to Alaska and eastward to Idaho. 



Variety pallidum Cockerell, Vancouver Island ! British Columbia ; 

 Cape Fox, Alaska ! 



Type (andersoni*) Victoria and Nanaimo, British Columbia. 



V ar. pacificum Cockerell, Victoria, B. C. ! 



I have followed Dr. Pilsbry's arrangement of the varying forms of 

 this remarkable self -amputating slug. 



