332 



DESCRIPTION OF A COLLECTION OF FOSSILS, 



ToxosoMA EBOREA, Cou., loc. ciL, p. 31, PI. 1, f. T. 

 ?Pachytoma tertiana, Con., loc. ciL, p. 31, PI. 1, f. 11. 



Tert. ; Brazil. 

 Tert. ; Brazil. 



LAMELLIBRANCHIATA. 



Dactylina Chiloensis, Molina (sp.). 

 Fholas id., Molina, Hist. Chile, p. 119. 



Id. Hup., Gay's Chile, p. 381, PI. 6, f. 3. 



Dactylina id., Gabb, J. Conch., 1869, p. 29. 

 SoLECURTUs Hanetiana, d'Orb. 



Solenocurtus id., d'Orb., A. Mer., p. 124, PI. 15, f. 1-2. 

 Solecurtus id.. Hup., Gay's Chile, p. 368. 

 CoRBULA Bradlyi, Nclson, Tr. C. Acad., v. 2, p. 200, 

 Azara labiata, Matton (sp.), d'Oi'b., A. Mer., p. 161. 

 31i/a id., Matton. 

 Pachydon alatus. Con., J. Conch., v. 6, p. 19t, PI. 11, f. 1. 



Id. Con., P. Acad. Nat. Sci.,- Phila., v. 26, p. 28, PI. 1, f. 4, 18. 



P. CARINATUS, Con., J. Conch., v. 6, p. 196, PI. 10, f. 1. 

 Anisothyris id., Woodw., Ann. M. N. H., 1811, p. 108, PI. 5, f. 6. 

 P. cuneattjs. Con., J. Conch., v. 6, p. 119, PI. 10, f. 12. 

 Anisothyris id., Woodw., loc. cit., p. 101, PL 5, f. 8-a-&. 

 P. id., Con., Proc. Acad. Nat. Sci., Phila., v. 26, p. 28, PI. 1, f. 3. 

 P. {Anisorhyncus) otjneiformis. Con., loe. cit., p. 28, PL 1, f. 19. 

 P. (^.?) DISPAR, Con., loc. cit., p. 2T, PL 1, f. 1. 

 P. ERECTUS, Con., J. Conch., v. 6, p. 191, PL 10, f. 16. 

 Anisothyris id., Woodw., A. M. N. H., 1811, p. 101, PL 5, f. 9-a-6. 

 P. id.. Con., Proc. Acad. Nat. Sci., Phila., v. 26, p. 28. 



P. LED^FORMIS, Dall (sp.). 



Corhula {Anisothyris'i) id., Dall, J. Condi., v. 8, p. 92, PL 16, f. 14-15. 

 P. OBLIQUUS, Gabb, Jour. Couch., v. 4, p. 199, PL 16, f. 5. 



Id. Con., J. Conch., v. 6, p. 191, PL 10, f. 15. 



Anisothyris id., Woodw., A. M. N. H., 1811, p. 106, PL 5, f. 5-a-6. 

 P. OVATUS, Con., J. Conch., v. 6, p. 191, PL 10, f. 4. 

 Anisothyris id., Woodw., A. M. N. H., 1811, p. 106. 

 P. TENUIS,* Gabb, J. Conch., v. 4, p. 199, PL 16, f. 6. 

 P. id.. Con., J. Conch., v. 6, p. 196, PL 10, f. 1. 



Anisothyris Hauxwelli, Woodw., A. M. N. H., 1811, p. 105, PL 5, f. 1-a-d. 

 Tellina Amazonensis, Gabb, J. Couch., v. 4, p. 198, PL 16, f. 4. 



Tert.; Chile, Peru. 



Tert.; Chile. 

 Tert.; Peru. 



Quart. ; Arg. Rep. 



Tert.; Brazil 



Tert.; Brazil. 



Tert.; Brazil. 

 Tert.; BraziL 

 Tert.; Brazil. 



Tert.; Brazil. 

 Tert, ; Brazil, 



Tert.; Brazil. 



Tert. ; BraziL 



Tert.; Brazil. 



* In insisting on the use of this name, I am sustained by all the rules of scientific nomenclature. Other- 

 wise I should be very loath to raise a question over so paltry a matter as the privilege of claiming a genus or 

 species. Mr. Conrad proposed Anisothyns because, as he says, he was requested to do so, Pachydon being 

 considered objectionable ; at the same time he described all of his own species under the old generic name, 

 and subsequently retracted Anisothyris and described several more, also, as Pachydon. Woodward arbitrarily 



