13 



1895. Conulus fulvus Taylor, Ottawa Nat., vol. 9, pp. 176, 177 (recorded 



from near Macleod and Little Bow river, Alberta). 

 1899. Conulus fulvus alaskensis Pihbry, Nautilus, vol. 12, p. 116. 

 1905. Euconulus trochiformis (pars) Dall, Land and Freshwater Moll. 

 Alaska, pp. 8, 40. 



1905. Euconulus trochiformis var. alaskensis Dall, id., p. 41. 



1906. Euconulus fulvus Vanatta, Nautilus, vol. 20, p. 95 (recorded from 



Field, B.C., and Banff, Alberta). 

 1910. Euconulus fulvus alaskensis Pilsbry and Ferriss, Proc. Acad. Nat. 



Sci. Phila , 1910, p, 131, text f. 26 A-C. 

 1919. Euconulus fulvus alaskensis Berry, Proc. Acad. Nat. Sci. Phila., 



1919, pp. 196, 199, 202. 



1921. Petasina fulva Gude and Woodward, Proc. Malac. Soc. Land., 

 vol. 14, p. 177. 



Material Examined 



Some writers are beginning; to show a tendency to call all P. fulva from 

 the Rocky Mountain area and westward, P. /. alaskensis, and the writer 

 being persistently unable (cf. Berry, 1920, p. 202) to distinguish definitely 

 two nameable subspecies from the region in question must follow their 

 lead. Specimens from several localities, chiefly Calif ornian, kindly named 

 by Mr. E. G. Vanatta, have been insufficient to elucidate the matter. 

 There is the same need of critical overhauling of the North American 

 snails of the fulva-group as exists in the case of Gonyodiscus cronkhitei. 



Vertigo modesta (Say 1824) 



1824. Pupa modesta Say, Long's 2d Exped., II, Appendix, p. 259, pi. 15, 



f. 5. 



1847. Pupa decora Gould, Proc. Bost. Soc. Nat. Hist., vol. 2, p. 263, f. 

 1869. Pupa (Pupilla) decora Binney and Bland, Land and Freshwater 



Sh. N. Am., I, p. 237, f. 410. 

 1885. Pupa (Pupilla} decora Binney, Man. Am. Landsh., pp. 27, 59, 



189, 335, 483, f. 189. 

 1893. Pupa hoppii Taylor, Nautilus, vol. 7, pp. 85, 86 (recorded from 



Laggan, Alberta). 

 1898. Pupa (Nearctula) decora Pilsbry, Nautilus, vol. 11, p. 119 (merely 



catalogued). 



1898. Pupa (Nearctula) hoppii Pilsbry (pars), Nautilus, vol. 11, p. 119 

 (recorded from Laggan, Alberta). 



