10 THE NAUTILUS. 



I. Greegor, Jacksonville, Florida. Tritonidae. 



C. A. Harorave, Danville, Ind. Unionidae. 



Geo. W. Harper, Cincinnati, Ohio. Land and Fret^h Water shells 

 of North America. 



Dr. W. D. Hartinan, West Chester, Pa. Partula, Achatlnella 

 and Helicina. 



A. A. Hinkley, Dnbois, 111. Strepomatidae. 



Prof. Josiah Keep, Mills College, Cal. West Coast Shells. 



Rev. A. B. Kendig, Brooklyn, N. Y. Amphidromiis. 



F. R. Latc'hfbrd, Ottawa, Ont. Linnaeidne of North America. 

 M. L. Leach, ]M. D., Wexford, ]\Iich. MoUmks of Michigan. 

 W. Victor Lehman, Tremont, Pa. Unionidae. 



G. D. Lind, St. Lonis, Mo. Helicidae. 



G. W. Lichtenthaler, Bloomiugton, 111. West Const Shells. 



Wm. A. JMarsh, Aledo, 111. Unionidae. 



Geo. T. Marston, Green Bay, AVis. Wisconsin MoUasca. 



Chas. J. Mayuard, Newtonville, Mass. Strophia. 



Wm. G. Mazyck, Charleston, S. C. North American Land SJiells. 



Thomas Morgan, Somerville, N. J. 



James H. ^Morrison, Lexington, Va. Specific Variation. 



Wm. J. McGinty, Philadelphia, Pa. Marginellidae. 



Philip Kell, Philadelphia, Pa. Unionidae. 



H. A. Pilsbry, Philadel])hia, Pa. Land and Fresh Wider shells. 



AVm. J. Raymond, Oakland, Cal. West Coast I^and and Fresh 

 Wafer Shells and Tertiary and Qucdernarij Shells. 



John Ritchie Jr., Boston, ]Mass. Strombidae. 



S. Raymond Roberts, Glen Ridge, N. J. Cypraeidae. 



Edvvard AY. Roper, Revere, Mass, Cip-enidae. 



John Shallcross, Philadelphia, Pa. Yolutidae. 



Prof Benj. Sharp, Philadelphia, Pa. Dentaliidae. 



Ida M. Shejiherd, Long Branch, Cal. West Coast Shells. 



Prof B. Shimek, Lincoln, Neb. Ancylus and Svecineidae. 



Chas. T. Simpson, AVashington, D. C. Geographical Distribution 

 and Nomenclature. 



J. A. Singley, Giddiugs, Tex. Ljand Shells of North America. 



Sanderson Smith, New York, N. Y. Mollusca of N. W. Atlantic. 



Uselma C. Smith, Philadelphia, Pa. Conidae. 



Dr. y. Sterki, New Pliiladelphia, O. No. Amer. Pupidae and 

 Hyalinia. 



L. H. Streng, Grand Rapids, Mich. 



