THE MOLLUSCA OF COLORADO 83 



Commission of the United States and Mexico — 1892-04." Proc. U. S. Nat. Mus., 



Vol. XTX, 1897, pp. 333-379- 

 35. Ingersoll, Ernest. "Special report on the Mollusca." Bull. Hayden Survey, 



Vol. I, No. 2, 2d series, pp. 125-142; Eighth Ann. Kept. Hayden Survey, 1874, 



pp. 385-410. We cite only the latter, the diiTerence being the paging. 

 26. ***** * "The moUusks of the Rocky Mountains." Pop. Sci. Mo., Yol. 



XLXIX, 1876, pp. 43-49- 



******" On a collection of moUusks from Utah and Colorado." Proc. 



Davenport Acad. Nat. Sci., Vol. II, Part i, 1876-77, pp. 130-134. 



PiLSBRY, Henry A. "Note on Pupa muscorum Linne." The Nautilus, Vol. V, 



1 89 1, pp. 45-46. 



****** "Patula cooperi, sinistral." The Nautilus, Vol. V, 1891, p. 83. 



****** "Descriptions of new species and varieties of American Zonitidae 



and Endodontidse." The Nautilus, Vol. XII, 189S, pp. 85-87. 



****** "Vertigo coloradensis and V. ingersolli." The Nautilus, Vol. 



XVI, 1892, pp. 58-59. 



****** "Notes on the nomenclature of Pupillidae." The Nautilus, 



Vol. XVIII, 1905, pp. 105-107. 



****** ^^j5 Charles W. Johnson. " A classified catalogue with local- 

 ities of the land shells of America north of Mexico." Reprinted with corrections from 



The Nautilus, Aug., 1897, to Apr., 1898. Only the reprint cited herein. 

 44. ***** * AND Edward G. Van ATT A. " A partial revision of the Pupae of 



the United States." Proc. Acad. Nat. Sci. Phila., 1900, pp. 582-611. 

 4^ ****** and J. H. Ferriss. " Mollusca of the southwestern states. II." 



Proc. Acad. Nat. Sci. Phila., Mch., 1906, pp. 123-175. 



46. Sampson, F. A. "Shells of WiUiam's Canyon, Colorado," The Nautilus, Vol. VI, 

 1893, p. 102. 



47. Simpson, Charles T. "Notes on Unionidse." The Nautilus, Vol. V, 189 1, pp. 

 86-88. 



48. ****** "Notes on the Unionidse of Florida and the southeastern states." 

 Proc. U. S Nat. Mus., Vol. XV, 1892, pp. 405-436. 



4g. ****** "Types of Anodonta dejecta rediscovered." The Nautilus, 

 Vol. VIII, 1894, pp. 52-53. 



50. Stearns, Robert E. C. "List of North American land and fresh-water shells 

 received from the U. S. Department of Agriculture, with notes and comments thereon." 

 Proc. U. S. Nat. Mus., Vol. XIV, 1893, PP- 95-io6. 



ji, ****** "Notes on recent collections of North American land, fresh- 

 water, and marine shells received from the U. S. Department of Agriculture." Proc. 

 U. S. Nat. Mus., Vol. XVI, 1893, pp. 743-755. 



j2. ****** "Helix var. circumcarinata and Pyramidula elrodi." The 

 Nautilus, Vol. XVI, 1902, pp. 61-62. 



53. Sterki, V. "A study of the American species of Vertigo contained in the U. S. 

 National Museum, vnth a description of a new subgenus of Pupidae." Proc. U. S. 

 Nat. Mus., Vol. XI, 1888, pp. 369-380. 



54. ***** * "Some new forms of Vertigo." Proc. Acad. Nat. Sci. Phila.y 

 1890, pp. 31-35. 



