189. 
190. 
191. 
Ge) Gree 
sete 
. U. 
A 
f. 20. 
. Paranensis, Zea, Trans. Amer. Phil. Soc. v. 5. pl. 14. f. 42. 
cog >} 
Shel aie ele ieelicke Mel elie Glial 
NAIADES. 
. occidens, Lea, Trans. Amer. Phil. Soe. v. 3. pl. 10. f. 16. 
Unio ventricosus, Say. 
- ochraceus, Say, Conrad’s Monog. pl. 17. f. 2. 
Symphynota ochracea, Lea. 
. olivaceus, Zea, Trans. Amer. Phil. Soc. v. 4. pl. 16. f. 38. 
. orbiculatus, Hildreth, Conrad’s Monog. pl. 16. 
Unio abruptus, Say ; Unio crassus, Conrad. 
ovatus, Say, Conrad’s Monog. pl. 2. f. 1-3. 
Unio ventricosus, Deshayes; Unio subovatus, Deshayes ; 
Unio occidens, Deshayes. 
Paraguayanus (Monocondylea), D’Orb. S. Am. pl.70.f.5-7. 
parallelopipedon, Zea, Trans. Amer. Phil. Soe. v. 5. pl. 8. 
Unio Solsianus, D’Orbigny. 
. Parchappii (Monocondylea), D’Orb. S. Amer. pl. 68. f.1-3. 
. parvus, Barnes, Conrad’s Monog. pl. 9. f. 1. 
. Patagonicus, D’ Orbigny, S. Amer. pl. 70. f. 1-4. 
. patulus, Zea, Obs. Unio. p. 55. pl. 12. f. 20. 
pectorosus, Conrad, Freshwater Shells, p. 37. pl. 6. f. 1. 
penetus, Conrad, Freshwater Shells, p. 33. pl. 5. f. 1. 
perdix, Zea, Trans. Amer. Phil. Soe. v. 5. pl. 11. f. 31. 
peronatus, Conrad, Freshwater Shells, p. 47. pl. 2. f. 3. 
perovalis, Conrad, Freshwater Shells, p. 43. pl. 2. f. 2. 
. perplexus, Lea, Trans. Amer, Phil. Soc. v. 4. pl. 17. f. 42. 
Unio gibbosus, Conrad. 
. personatus, Say, Conrad's Monog. pl. 24. 
Unio capillaris, Lea. 
. phaseolus, Hildreth, Say’s Amer. Conch. pl. 22. 
Unio planulatus, Lea; Unio cuneatus, Barnes. 
. Phillipsii, Conrad, Monog. p. 9. pl. 5. f. 1. 
. pictorum, Lamarck, Enc. méth. v. 2. pl. 248. f. 4. 
Mya pictorum, Linneus; Mya corrugata, Chemnitz ; 
Mysca pictorum, Turton; Unio rostratus, Pfeiffer ; 
Unio manca, Lamarck; Unio Turtonii, Payrandeau ; 
Unio capigliola, Payrandeau ; Unio elongatula, Pfeiffer ; 
Unio Requienti, Michaud ; Unio Deshayesti, Michaud ; 
Unio limosus, Nilsson; Unio longirostris, Zeigler. 
. pictus, Zea, Trans. Amer. Phil. Soe. v. 5. pl. 11. £32. 
. pileus, Zea, Trans. Amer. Phil. Soc. v. 4. pl. 18. f. 47. 
. platyrhynchus, Rossmasler, Icon. f. 130. 
Unio Cailliaudi, Ferussac. 
