1853.] 255 
Unio pectitus, Con., Journ. Acad. Nat. Se. iii. 2d series. 
personatus, Say, (female) Disseminator, 1829, 309. 
Con. Monog. 47, 24. 
Kust. Chemn. Unio, pl. 10, fig. 1. 
U. capillaris, Zea, 1834, v.29,2,2, Synopsis, 35. 
U. pileus, Lea, (male) 1832, iv. 119, 18,47, Synopsis, 24. 
Chenu, Conchyl. Unio, pl. 15, fig. 2. 
perstriatus, Lea, 1852, x. 255, 12,3, Synopsis, 36. 
Phillipsii, Coz. Monog. 9,5, 1. 
Lea, Synopsis, 22. 
Kust. Chemn. Unio, pl. 10, fig. 3. 
pictus, Lea, 1834, v.73, 11, 32, Synopsis, 27. 
pilaris, Lea, viii. 209, 14, 24, Synopsis, 35. 
Chenu, Conchyl. Unio, pl. 29, fig. 3. 
placitus, Lea, 1852, x. 279,23, 38, Synopsis, 29. 
planilateris, Con. Monog. 103, 57, 1. 
plenus, Lea, 1842, viii. 211,14, 26, Synopsis, 25. 
plexus, Con. (j) Monog. 1836, 89, 49, 1. 
U. pliciferus, Zea, 1838, vi. 61, 17, 53, Synopsis, 20. 
Chenu, Conchyl. Unio, pl. 22, fig. 5. 
U. subtrapezius, Philippi, Conchyl. 1847, 12, 5, 2. . 
U. carbonarius, Lea, (old shell) vi. 37, 11, 32, Synopsis, 20. 
Chenu, Conchyl. Unio, pl. 23, fig. 1. 
Powellii, Lea, 1852, x. 270, 19,25, Synopsis, 28. 
politus, Say, Amer. Conch. Synonym. of Unio, No. 6. 
U. brevialis, ? Eam. An. sans Vert. 1819, vi. 73. 
U. olivarius, var. 2, Raf. 
U. brevialis, Crowch, Illustrated Lamarck, 1827, 16, 9, 3. 
U. subrotundus, Lea, (not Raf.) 1832, iv. 117, 18,45, Synopsis, 26. 
Chenu, Conchyl. Unio, pl. 15, fig. 1. 
U. politus, Con. Monog. 67,37, 2. 
Prevostianus, Lea, 1852, x. 269, 19,24, Synopsis, 29. 
prasinus, Con. (£4) New Fresh Water Shells, May, 1834, 44. 
Monog. 79, 44, 2. 
U. Schooleraftensis, Lea, Aug. 1834, v. 37, 3, 9. 
U. nodiferus, Lea, (not Coz.) Synopsis, 22. 
productus, Con., Monog. 44. 
Kust. Chemn. Unio, pl. 16, fig. 2. 
Lea, Synopsis, 37. 
proximus, Lea, 1852, x. 271, 20,27, Synopsis, 29. 
pullus, Con. Monog. 100, 55, 2. 
Lea, Synopsis, 31. 
*pulvinulus, Lea, 1845, x. 81,8, 24, Synopsis, 26. 
pumilis, Lea, 1838, vi. 23,7,17, Synopsis, 24. 
Chenu, Conchyl. Unio, pl. 19, fig. 1. 
puniceus, Haldeman, Journ. Acad. Nat. Se. viii. 201. 
purpuratus, Lam. (/) Desh. An. sans Vert. vi. 533. 
Fer. Guerin’s Mag. 1835, 26. 
U. ater, Lea, iii. 426, 7, 9. 
U. lugubris, Say, Amer. Conch. pl. 43. 
U. atra, Desh. Enc. Method. Vers. ii. 528. 
U. purpuratus, Lea, Synopsis, 38. 
Mya ventricosa, Soland. Humph. Catalogue, No. 1084, 59. | 
Chenu, Conchyl. Unio, pl. 10, fig. 1. 
40 
