ate 
6372 subopaca, Lam., 4 Montpelier, Delessert, pl. 30, f. 3. 
6373  thiarella, Fer., Sicily, Vill. Disp. Syst., p. 32. 
6374  ventricosa, Guild., St. Vincent, 
GENUS ANCYLUS. Geoffroy. 
6375  capuloides, Jan, Sicily, Porro Mal., p. 87. 
6376 compressus, Parr., Austria, 
6377  costatus, Villa, Sardinia, Villa Cat., 1841, p. 39. 
6378 deperditus, Parr., Carniola, Villa Cat., 1841, p. 39. Ancylus spinarosae, Schmidt. 
6379 diaphanus, Hald., Ohio, Hald., pl. 1, f. 4. 
6380 fuscus, Adams, Massachusetts, Haldi plait vi 
6381 lacustris, Mill., 1 England, Sowb. Gen., f. 2. Patella oblonga, Turt. 
6282 _ luteolus, Parr., Italy, 
6383 Moricandi, D’Orb., South America, Voy. Am. Merid., p. 355. 
6384  obscurus, Hald., Tennessee, Hald., pl. 1, f. 5. 
6385 _ parallelus, Hald., New England, Hald., pl. 1, f. 6. 
6386  radiatus, Guild., 5 St. Vincent, Zool. Journ., 3, p. 536. 
6387 recurvus, Parr Sicily, Villa Cat., 1841, p. 39. 
6388 _rivularis, Say, Pennsylvania, Hald., pl. 1, f. 1. 
spimarosae, Schmidt, Carniola, Villa Cat., 1841, p. 39. is Ancylus deperditus, Parr. 
6389  tardus, Say, Vermont, Hald., pl. 1, f. 3. 
Cintats'ste GAS "TE RO ROD A: 
Orper. PECTINIBRANCHIATA. 
Famity MELANIANA. 
GENUS MELANIA. Lamarck. 
6390 equalis, Hald., Nolachucky River, Hald. Mon. Cov., No. 4. - 
6391 afra, Ziegl., 9 Carniola, Villa Cat., 1841, p. 36. 
6392  altilis, Lea, Susquehannah, Trs. Am. Ph.S., 8, pl. 5, f. 23. 
6393 alveare, Conr., Tennessee, New F. W. Shells, pl. 4, f. 7. 
6394 amarula, Lam., 10 Madagascar, Sowb. Gen., f. 1. 
6395  annulifera, Conr., Alabama, New EF. W. Shells, pl. 8, f. 2. 
6396 approxima, Hald., Tennessee, Hald. Mon. Cov., No. 4. 
6397 armigera, Say, Tennessee, Jour. Ac. N.S., 2, p. 178. 
6398 — asperata, Lam., 1 South America, Delessert, pl. 30, f. 8. 
6399 — aurita, Mill., Africa, Guer. Mag., pl. 12. Pirena aurita, Lam. 
