58 
58. 
59. 
60. 
Bers. Se eer ee os Vera a ce Gme e 1e) here ccie 
NAIADES. 
. crassidens, Lamarck, Anim. sans vert. v.6. p. 532. 
Unio cuneatus, Barnes ; Unio niger, Conrad. 
- crassissimus, Ferussac, Enc. méth. pl. 248. f. 1. 
Mya crassissima, Klein; Unio auricularis, Spengler ; 
Unio margaritacea, Draparnaud; Unio sinuata, La- 
marck; Unio rugosa? Poiret. 
. crassus, Say, Amer. Conch. pl. 8. 
Unio ellipticus, Barnes; Unio carinatus, Barnes; Unio 
granis, Wood ; Unio fasciatus, Conrad ; Unio ligamen- 
tinus, Lamarck. 
. cresserus, Lea, Obs. Unio. v. 2. p. 33. pl. 10. f. 28. 
. crispatus, Gould, Pro. Bost. Soc. Nat. Hist. 1843. p. 141. 
. Cumberlandianus, Zea, Tr. Amer. Phil. Soc. v. 6. pl. 7. f. 19. 
cuprinus, Zea, Trans. Amer. Phil. Soe. v. 4. pl. 12. f. 24. 
Unio metallicus, Say. 
. cylindricus, Say, Amer. Conch. pl. 4. f. 3. 
Unio naviformis, Lamarck. 
. decisus, Lea, Trans. Amer. Phil. Soe. v. 4. pl. 12. f. 23. 
. declivis, Say, Amer. Conch. pl. 35. 
Unio geometricus, Lamarck. 
. dehiscens, Say, Amer. Conch. pl. 24. 
Unio oriens, Lea. 
. delodonta, Lamarck, Anim. sans vert. v. 6. p. 540. 
Unio lacteolus, Lea. 
. deltoideus (Margaritina), Lea, Tr. A. P.S. v.6. pl. 13. f. 38. 
. depressus, Lamarck, Anim. sans vert. v. 6. p. 544. 
. discoideus (Symphynota), Lea, Tr. A. P.S. v. 5. pl. 11. f. 33. 
Dipsas discoidea, Lea; Unio tenuis, Gray. 
discus, Lea, Obs. Unio. v. 2. pl. 18. f. 57. 
divaricatus, Zea, Trans. Amer. Phil. Soe. v. 5. pl. 9. f. 24. 
dolabreformis, Zea, Obs. Unio. v. 2. p. 103. pl. 24. f. 113. 
Donaciformis, Zea, Obs. Unio. v. 2. p. 9. pl. 4. f. 3. 
Dorfuillianus, Zea, Obs. Unio. v. 2. p.’'73. pl. 17. f. 54. 
dromas, Lea, Trans. Amer. Phil. Soe. v. 5. pl. 10. f. 29. 
. Duprei ( Castalia), Récluz, Revue Soe. Cuv. 1842. p. 305. 
ebenus, Zea, Trans. Amer. Phil. Soc. v. 4. pl. 9. f. 14. 
Unio Mytiloides, Conrad. 
. Egyptiaca, Caillaud, Voy. a Méroé, v. 2. pl. 61. f.6 and 7. 
. elegans, Lea, Trans. Amer. Phil. Soe. v. 4. pl. 19. f. 13. 
Unio truncatus, Rafinesque. 
. ellipsis, Zea, Trans. Amer. Phil. Soc. v. 3. pl. 4. f. 4. 
Unio brevialis? Sowerby. 
