IV LTST OF CONTRIBUTORS. 



Tryon, Geo. W., Jr. Catalogue and Synonymy of the Recent Species 



of the Family Lucinidae 82 



Catalogue of the Family Chamidae 116 



Catalogue of the Family Chametrachaeidae 120 



Description of New Species of Marine Bivalve Mollusca 130 



Catalogue and Synonymy of the Family Galeommidae 222 



Catalogue and Synonymy of the Family Leptonidse 227 



Catalogue and Synonymy of the Family Lascidae 229 



Catalogue and Synonymy of the Family Astartidse 245 



Catalogue of the Family Solemyidae 258 



