1915 
1916 
1917 
1918 
1919 
1920 
1921 
1922 
1923 
1924 
1925 
1926 
1927 
1928 
1929 
1930 
1931 
1932 
1933 
1934 
1935 
1936 
1937 
1938 
1939 
1940 
1941 
1942 
1943 
1944 
variabilis, 
ce var., 
varicosus, 
velum, 
ventricosa, 
ventricosus, 
ventricosus, 
ventricosus, 
ventricosus, 
venustus, 
verrucosus, 
verrucosus, 
ee var., 
“cc “ec 
violaceus, 
Virginianus, 
viridis, 
Watereensis, 
Zieglerianus, 
Z1ZZag, 
arcula, 
“ var., 
Bonelli, 
calceola, 
complanata, 
of var., 
confragosa, 
“ var., 
Corrientesensis, 
costata, 
. var., 
Curreyana, 
deltoidea, 
margaritifera, 
var., 
Maton, 
Lea, 
Say, 
Bouill., 
Soland., 
Desh., 
Say, 
Barnes, 
Lea, 
Barnes, 
Rat 
Speng., 
Lam., 
Conrad, 
Lea, 
Lea, 
Lea, 
GENUS 
Lea, 
Fer., 
Lea, 
Barnes, 
Say, 
D’Orb., 
Raf., 
Lea, 
Lea, 
Linn., 
538 
538 
544 
68 
Brazil, 
Ohio River, 
Ohio River, 
Auvergne, 
Mississippi, 
Ohio River, 
Wabash River, 
Wisconsin, 
Potosi, Missouri, 
Lake Erie, 
Ohio River, 
New Jersey, 
Virginia, 
Juniata River, 
Wateree Canal, 
Cumberland River, 
Ohio River, 
MARGARITANA. 
Altamaha River, 
France, 
Turin, 
Ohio, 
Ohio River, 
Tennessee, 
Illinois, 
Argentine Republic, 
Ohio, 
Wabash River, 
Stone’s River, 
Sciota River, 
Europe, 
Spix. Test. B., pl. 26, f. 3, 4. 
Unio rotundus, Wagn. 
Mrs. las SoaveilO: pl. 24, f. 4—7. Mya variabilis, Maton. 
ns Am sie seuveds pl. 11, f. 20. is Unio cicatricosus, Say. 
Trs. Am. P.S., v. 8, pl. 11, £21. is Unio leptodon, Raf. 
Bouillet Cat., p. 149. 
List. C., pl. 155, f. 10? 
Conr. Mon., p. 4, pl. 2. 
Amer. Conch., pl. 32. 
Sillim. Jour., v. 6, pl. 13, f. 14. 
Trs. Am. P.S., v. 6, pl. 2, f. 4. 
Sillim. Jour., v. 6, pl. 5, f. 6. 
Sillim. Jour., v. 6, pl. 7, f. 8. 
Reeve C. Syst., pl. 88, f. 1. 
A.G. des 8.P., v.5, pl.81,f.10,11. 
List. C:, pl. 150, f. 5. 
Schroet. Hinl., v. 2, p.614,No.1. 
Conr. Mon., p. 35, pl. 17, f. 1. 
fossil. 
is Unio purpuratus, Lam. 
is Unio ovatus, Say. 
is Unio cardium, Raf. 
is Unio eardium, Raf. 
is Unio tuberculatus, Raf. 
Unio tuberculatus, Barnes. 
is Unio complanatus, Soland. 
is Unio radiatus, Lam. 
is Unio Tappanianus, Lea. 
N. F. W. Shells, p. 39, pl. 6, f.4. Unio Raveneli, Conrad. 
Ts. Am. P.S., v. 6, pl. 10, f. 27. 
Ts. Am. P.S., v. 3; pl. 12, f. 19.is Unio nervosa, Raf. 
Schumacher. 
Ts. Am. P.S., v. 6, pl. 22, f. 69. 
Rossm., p. 24, pl. 9, f. 184. 
Pfeiff., p. 32, pl. 8; f. 8, 4. 
Menke Synop., 1830, p. 106. 
Rossm., f. 746. 
Ts Am seh. v.1osiplos tail. 
Sillim. Jour., v. 6, p. 278. 
Amer. Conch., pl. 21. 
Voy. Am. Mer., pl. 68, f. 8-10. 
Ann. Gen. Sci. Ph., v. 5. p. 49. 
Sillim. Jour., v. 6, pl. 13. 
Ts. Am. P.S., v. 8, pl. 18, f. 40. 
Ts. Am. P.S., v. 6, pl. 13, f. 38. 
Chemn. 6, pl. 1, f. 5. 
Alasmodonta Bonellii, Fer. 
Unio depressa, Muhlf. Meg. 
Unio compressa, Menke, 
Alasmodonta uniopsis, var. 
Unio caleeolus, Lea. 
Symphynota complanata, Lea. , 
Alasmodonta complanata. 
Alasmodonta confragosa, Say. 
Monocondylca Corrientesensis. 
Alasmodonta rugosa, Barnes. 
Alasmodonta abducta, Say. 
Mya margaritifera, Linn. 
Schum. Vers. Test., pl. 10, f. 4. Margaritana fluviatilis, Schu. 
Knorr. Verg., v. 4, pl. 25, f. 2. Unio elongata, Lam., Mich. 
Pfeiff. Syst. An., pl. 7, f. 4, 5. Unio sinuata, Pfeiff. 
Mich. Comp., pl. 16, f. 27, 28. Unio Roissii, Mich. 
