176 PHYSA. 



8 — 10. p. HUMEROSA, Gould. Proc. Bost. Soc. 

 Nat. Hist. V, 128, 1855. 

 Binney, 1. c. 92. No. 17. 



11. P. viRGATA, Gould. Proc. Bost. Soc. Nat. 



Hist. V, 128, 1855. 

 Binney, 1. c. 93. No. 16. 



12. P. TRiTiCEA, Lea. Proc. Acad, Nat. Sci. 



Philad. viii, 80, 1856. 

 Observ. xi, 132, t. 24, f. 103. No. 15. 



13. P. PROPiNQUA, Tryon. Am. Jour. Conch. 



i, 223, t. 23, f. 5, 1865. No. 7. 



14. P. CooPERi, Tryon. Am. Jour. Conch, i, 



224, t. 23, f. 9, 1865. No. 22. 



15. P. DiAPHANA, Tryon. Am. Jour. Couch. 



i, 224, t. 23, f. 11, 1865. No. 9. 



16. P. DiSTiNGUENDA, Tryon. Am. Jour. 



Conch, i, 225, t. 23, f. 6, 1865. 



No. 19. 



17. P. POLiTissiMA, Tryon. Am. Jour. Conch. 



i, 226, t. 23, f. 13, 1805. No. 11. 



18. P. occiDENTALis, Trj^on. Am. Jour. 



Conch, i, 226, t. 23, f. 8, 1865. 



No. 6. 



(92) 



