and 5. P. Ipsviciensis, Valencienn. I. c. 28 and 36. M. 

 C. 611./. Sand 4. 



4. P. reflexa (Say). Philadel. Journal, 4. 153. pi. 13./ 4. 

 Valenc. Lc.26. P. Americana, Wagner. Bronn. Leth. 974. 



5. P. Menardi (Desh.). P. Faujasii, Basterol Mem. de la 

 Soc. d'Hist. Nat. 2. 95. P. Menardi, Dujardin, Mem. 

 de la Soc. Geol. de France., vol. II, 255. Bronn. LetJuea, 

 974. P. Basteroti, Valenc. I. c. 22 and 35. pL 6./. 2. ab. 



6. P. ^entilis, M. C. 610./ 1. 



7. P. Rudolphii (Eichwald). Panopaea Faujasii, Du Bois 

 Conch. Foss. Wolhyni-podolien. 51. pl. 4. /. 1 — 4. P. 

 Rudolphii, Eichwald, Naturh-Scizze 204. Valenc. I. c. 

 24 flWf/ 35./?/. 5.f. \.a. b. 



8. P. intermedia (M. C). Mya intermedia, M. C. 76./ 1. 

 flwrf 419./ 2. Panopaea intermedia, M. C. v. 6.211. t. 602. 



/ 4. Corbula dubia, Deshayes Cocquilles de Paris, V. 

 I. 59.pl. 9./ 13 and 14. P. Deshayesii, Valenc. I. c. 20 

 and 35.pl. 4./2. «. b. 



9. P. plicata, M. C. 419./ 3. P. Deshayesii var. Valenc. 

 I. c. Wand 35. 



10. P. Sowerbyi, Valenc. I. c. 27 and 36. P. Faujasii, 

 M. C. 602./ 1. 2. 



11. P. oblata\M. C. Index). Mya gibbosa, M. C. t. 419. 



/. 1- 



12. P. gibbosa (M. C). Lutraria gibbosa, M. C. I. 42. 



Panopaea gibbosa, M. C. vol- 6. 211. Panop&a Agassizii, 

 Valenciennes, I. c. 31. 



13. P. subsinuosa, Valenc. I- c. 31. 



14. P. Norvegica, M. C. supra vol. 7. 1. 610. 611. 



15. P.? abrupta (Valenc). Pholadomya abrupta, Cowroc? 

 Fossil Shells o/N. America, v. l.t. 12. P. abrupta, Valenc. 

 I. c. 28. 



16. P. ? margaritacea (Valenc). Glycimeris margaritacea, 

 Liam. Hist. Nat. v. 5. 458. Clavageila Lodoisca, Caillat 

 Ann. Soc. des Sciences de Seine et Oise, pl. 9. / 9. Lam. 

 Hist. Nat. ed. 2. v. 6. 68. note. Panopaea margaritacea, 

 Valenc. I. c. 29 and 35. pl. 5. f. 2. a. b. 



Of the above P. Aldrovandi and P. Norvegica are also 

 found living, the first in the Mediterranean Sea, and the 

 latter in the Northern Ocean. Three other living species 

 are described besides these. 



