176 
PHYSA. 
8—10. P. numErosa, Gould. Proc. Bost. Soc. 
Pa 
12. 
13. 
18. 
Nat. Hist. v, 128, 1855. 
Binney, I. c. 92. No. 17, 
. vIRGATA, Gould. Proc. Bost. Soc. Nat. 
Hist. v, 128, 1855. 
Binney, 1. c. 93. No. I6, 
. TRITICEA, Lea. Proc. Acad. Nat. Sci. 
Philad. viii, 80, 1856. 
Observ. xi, 132, t. 24, f. 103. No, 15, 
. PROPINQUA, Tryon. Am. Jour. Conch. 
i, 223, t. 23, f. 5, 1865. No. 7, 
. Cooperi, Tryon. Am. Jour. Conch. i, 
224, t. 23, f. 9, 1865. No, 22, 
. DIAPHANA, Tryon. Am. Jour. Conch. 
i, 224, t. 23, f. 11, 1865. No. 9, 
. DISTINGUENDA, Tryon. Am. Jour. 
Conch. i, 225, t. 23, f. 6, 1865. 
No, 19. 
. P. potrtissmma, Tryon. Am. Jour. Conch. 
i, 226, t. 23, £ 13, 1866. No. 11. 
P. occiwentTaLis, Tryon. Am. Jour. 
Conch. i, 226, t. 23, f. 8, 1865. 
: No. 6, 
(92) 
