35. 
36. 
37. 
38. 
39. 
40. 
41. 
42. 
43. 
44. 
45. 
46. 
47. 
48. 
49. 
50. 
5l. 
52. 
53. 
54. 
55. 
U. 
56. U 
57. U 
NAIADES. 57 
. Capseeformis, Lea, Trans. Amer. Phil. Soc. v. 5. pl. 2.f. 4. 
. carbonarius, Zea, Obs. Unio. v. 2. p.37. pl. 11. f. 32. 
. cariosus, Say, Amer. Conch. pl. 3. f. 2. 
Unio luteolus, Conrad ; Unio ovatus, Valenciennes ; Unio 
crassus (old), Say; Unio carinatus (rayed), Barnes ; 
Unio ellipticus (young), Barnes. 
- castaneus, Lea, Trans. Amer. Phil. Soc. v. 4. pl. 11. f. 21. 
- Childreni, Gray, 
. circulus, Lea, Obs. Unio. p. 47. pl. 9. f. 14. 
? 
Mya rotunda? Wood. 
. Clairbornensis, Lea, Obs. Unio. v. 2. p. 105. pl. 24. f. 115. 
. clavus, Lamarck, Conrad’s Monog. p. 5. pl. 3. f. 1. 
Unio Modioliformis, Say ; Unio scalenius, Rafinesque. 
. coccineus, Lea, Trans. Amer. Phil. Soe. v.6. pl. 5. f. 12. 
Unio catillus, Conrad. 
- complanatus, Lea, Obs. Unio. v. 1. p. 62. 
Mya complanata, Dillwyn; Unio purpureus, Say ; Unio 
rarisuleata, Lamarck ; Unio coarctata, Lamarck; Unio 
purpurascens, Lamarck; Unio rhombula, Lamarck ; 
Unio carinifera, Lamarck ; Unio Georgina, Lamarck ; 
Unio glabrata, Lamarck ; Unio sulcidens, Lamarck. 
complanatus (Alasmodonta), Barnes, Silliman’s Journ. v. 6. 
p- 278. pl. 14. £.22. 
Symphynota complanata, Lea. 
- compressus ( Symphynota), Lea, Trans. Amer. Phil. Soe. v. 3. 
pl. 12..f. 22. 
. confertus, Zea, Trans. Amer. Phil. Soe. v. 5. pl. 16. f.47. 
Unio modestus, Ferussac. 
. confragosus (Alasmodonta), Say, Amer. Conch. pl. 21. 
Margaritina confragosa, Lea. 
. congareus, Lea, Trans. Amer. Phil. Soe. v. 4. pl. 6. f. 4. 
. Conradicus, Lea, Trans. Amer. Phil. Soe. v. 5. pl. 9. f. 23. 
. contradens, Lea, Obs. Unio. v.2. p. 75. pl. 18. f. 58. 
- Cooperianus, Zea, Trans. Amer. Phil. Soe. v. 5. pl. 8. f. 21. 
. cor, Conrad, Freshwater Shells, p. 28. pl. 3. f. 3. 
. cornutus, Barnes, Silliman’s Journ. v.6. pl. 4. f. 5. 
Unio reflexus, Conrad. 
. Corrianus, Lea, Trans. Amer. Phil. Soe. v. 5. pl. 9. f. 25. 
. Corrientesensis (Monocondylea), D’Orbigny, Voy. Amér. Sud, 
pl. 68. f. 8-10. 
- corrugatus, Lamarck, Enc. méth. pl. 248. f. 6, 8. 
Mya corrugata, Miller; Mya rugosa, Gmelin ; Mya no- 
dosa? Gmelin; Mya spuria, Gmelin. 
