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1808 Variety montanensis Ancey 
Deer Lodge valley, Montana. 
1809 Polygyrella Harfordiana 
Fresno Co., Cal. 
1810 Polygyrella Yatesii 
Murphy’s and Cave City, Calaveras Co., Cal. 
1811 Thysanophora Hornii 
Ft. Grant, Arizona.—N. M.—Mexico. 
1812 Thysanophora Ingersolli 
Colorado at high altitudes.—Fly Park, Arizona. 
1813—Variety convexior Ancey. 
Logan canyon, Utah.—Weston, Oregon. 
1814 MHolospira Mearnsii Dall. 
Top of Hachita Grande Mts., Grant Co., Texas. 
1815 Holospira Cockerelli Dall, Nautilus 11:61. 
Debris of Rio Grande at Mesilla, N. M. (Cockerell). 
1816 MHolospira bilamellata Dall. 
Hachita Grande Mt., N. M. 
1817 Holospira Roemeri 
New Braunfels, Texas. 
1818 Holospira Crossei Dall. 
Hachita Grande Mt., N. M. 
1819 MHolospira pilsbryi Dall. 
New Mexico or Arizona.—Puebla, Mexico. 
1820 Leucocheila fallax 
Canada to Florida. Minn. Texas. Arizona. 
Genus Bifidaria Sterki. 1891. 
1821 Bifidaria armifera: eastern U. S. 
1822 Bifidaria hordeacea: Ariz.—N. M. 
1823 Bifidaria procera 
Minn. to N. M. 
1824 Bifidaria hordeacella 
Comal and Lee counties, Texas.—N. M. 
1825 Bifidaria hebes (See 1593). 
Type locality: White Pine, Nevada. Occurs also in Utah, 
Arizona and N. M. 
Synonymy:—Pupa arizonensis W. G. B. (non Gabb).—P. 
Gabbi Dall. 
1826 Forma saxicola Ckll. Near Silver Cliff, Colo. 
1827 Variety Mexicanorum Ckll. Mesilla, N. M. 
1828 Bifidaria Pilsbryana Sterki. 
New Mexico.—Arizona. 
1829 Pupa Rowelli 
Oakland to Monterey, Cal. 
1830 Pupa castanea Sterki. 
Lake Co., Cal. 
1831 Pupa decora borealis: Bering Island. 
1832 Pupa concinnula CkIll. 
Colorado at high elevations. 
Synonymy:—Vertigo Ingersolli Ancey and vars. accedens and 
haydeni.—Perhaps P. montanella Ckll. ined. 
1833 Pupa coloradoensis Ckl.. 
Colorado, mid-alpine. 
1834 Pupa Hoppii Maell. 
Greenland.—?Anticosti Island.—Laggan, near summit of 
Rocky Mts. 
1835 Pupa columbiana Sterki. 
Wash.; and var. Utahensis Sterki, ined. 
1836 Pupa calamitosa 
San Diego, Cal.—Baja Cal. 
