1853.] 255 



Unio pectitusj Con., Journ. Acad. Nat. Sc. iii. 2d series. 



personatus, Say, (female) Disseminator, 1829, 309. 



Con. Monog. 47, 24. 



Kust. Chemn. Unio, pi. 10, fig. 1. 



U. capillaris. Lea, 1834, v. 29, 2, 2, Synopsis, 35. 



17. pileus. Lea, (male) 1832, iv. 119, 18, 47, Synopsis, 24. 



ChenUi Conchyl. Unio, pi. 15, fig. 2. 

 perstriatus, Z,a, 1852, x. 255, 12, 3, Synopsis, 36. 

 Phillipsii, Co7i. Monog. 9, 5, 1. 



Lea, Synopsis, 22. 



Kust. Chemn. Unio, pi. 10, fig. 3. 



pictus. Lea, 1834, v. 73, U, 32, Synopsis, 27. 



pilaris. Lea, viii. 209, 14, 24, Synopsis, 35. 

 Chenu, Conchyl. Unio, pi. 29, fig. 3. 



placitus, Zrea, 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, Lea, 1838, vi. 61, 17, 53, Synopsis, 20, 



Chejiu, Conchyl. Unio, pi. 22, fig. 5. 

 U. subtrapezius, PAt7ij3j[?i, Conchyl. 1847, 12, 5, 2. 

 U. carbonarius, Lea, (old shell) vi. 37, 11, 32, Synopsis, 20. 

 Chenu, Conchyl. Unio, pi. 23, fig. 1. 



Powellii, Lea, 1852, x. 270, 19, 25, Synopsis, 28. 



politus. Say, Amer. Conch. Synonym, of Unio, No. 6. 

 U. brevialis, ? Lam. An. sans Vert. 1819, vi. 73. 

 U. olivarius, var. 2, Raf. 



U. brevialis, Crouch, Illustrated Lamarck, 1827, 16, 9, 3. 

 U. subrotundus, Lea, (not Raf.) 1832, iv. 117, 18,45, Synopsis, 26. 

 Chemi, Conchyl. Unio, pi. 15, fig. 1. 

 U. politus, Con. Monog. 67,37, 2. 



Pre^ostianus, Lea, 1852, x. 269, 19,24, Synopsis, 29. 



prasinus, Con. (Z) New Fresh Water Shells, May, 1834, 44. 

 Monog. 79, 44, 2. 

 U. Schoolcraftensis, Lea, Aug. 1834, v. 37, 3, 9. 

 U. nodiferus. Lea, (not Con.) Synopsis, 22. 



productus, Con., Monog. 44. 



Kust. Chemn. Unio, pi. 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. 

 Ckeiuc, Conc\iy\. Unio, pi. 19, fig. 1. 



puniceus, Haldeman, Journ. Acad. Nat. Sc. viii. 201. 



purpuralus, Lam. {I) Desh. An. sans Vert. vi. 533. 

 Fer. Guerin's Mag. 1835, 26. 

 U. ater, Lea, iii. 426, 7, 9. 

 U. lugubris, Say, Amer. Conch, pi. 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, pi. 10, fig. 1. 



40 



