THE NAUTILUS. 31 



Sargent, H. E. — Annotated List of the Mollusca found in the 

 vicinity of Clearwater, "Wright Co., Minn. (Naut. IX, p. 127, 

 1896.) 



Say, Thomas.— Nich. Encyc., 1st Ed., 1817. 

 Singley, J. A. — Texas Mollusca. (4th Ann. Rep. Geol. Survey 

 of Texas, p. 314, 1892.) 



Smith, Maxwell Shells of Richfield Springs, N. Y., and vicinity. 



(Naut. XX, p. 91, 1906.) 



Smith, S., & Prime, T. — Report on the Mollusca of Long Island, 

 N. Y., and its dependencies. (Ann. N. Y. Lye. Nat. Hist. IX, p. 

 402, 1870.) 



Squyer, Homer List of Shells from the vicinity of Mingusville, 



Montana. (Naut. VIII, p. 64, 1894.) 



Stearns, R. E. C — Observations on Planorbis. (Proc. P. A. 

 N. S., 1881, p. 101.) 



Stearns, R. E. C — Notes and Comments on the Distribution of 

 Planorhis (^Helisosmd) bicarinatus. (West, Am. Scientist, 1889, 

 p. 110.) 



Stearns, R. E. C — List of Shells collected by Vernon Bailey in 

 Heron and Eagle Lakes, Minn. (Proc. U. S. Nat. Mus. XXII, pp. 

 135-8.) 



Sterki, V — List of the Land and Fresh-water Mollusca of Tus- 

 cawarus County, Ohio. (18th Ann. Rep. Ohio St. Acad. Sci., p, 6.) 

 Strecker, J. K., Jr — The Mollusca of McLennan County, Texas. 

 (Naut. XXII, p. 65, 1908.) 



Stupakoff, S. H. — Land and Fresh-water Shells of Allegheny 

 County, Pa. (Naut. VII, p. 135, 1894.) 



Taylor and Shiverick. — Catalogue of Shells found in and near the 

 County of Bristol, Mass., 1840?. 



Tryon, G. W., Jr Notes on Mollusca collected by Dr. F. V. 



Hayden in Nebraska. (Am. J. of Con. IV, p. 151, 1868.) 



Tufts, Samuel, Jr. — A List of Shells collected at Swampscot, 

 Lynn and vicinity. (Proc. Essex Inst. I, p. 30, 1856.) 



Walton, John. — The Mollusca of Monroe County, N. Y. (Proc. 

 Rochester Acad. Sci. II, p. 13, 1892.) 



Walker, R. D., & Coolidge, W. H., Jr Mollusca of Keene, New 



Hampshire. (Naut. XXII, p. 32, 1908.) 



Whiteaves, J. F. — List of Land and Fresh-water Shells from the 

 District of Keewatin. (Rep. Geol. Surv. of Canada, 1905, p. 6.) 



