MAN UAL 



OF 



Structural and Systematic. 



WITH ILLUSTRATIONS OF THE SPECIES. 



A 



By GEORGE W, TRYON, Jr, ^^^ , 



CONTINUED BY 



HENRY A. PILSBRY. 



VoL X. 



NERITID.E, ADEORBIID^, CYCLOSTREMATID/E, I.IOTIID^ 



By Gfo. W. Tryon Jr. 



PHASIANELLINyE. TURBINID.E. DELPHINULIN^. 



By Henry A. Ph.sbry. 



PHILADELPHIA: 

 Published by the Conchological Section, 



ACADEMY OF NAl URAL SCIENCES, CpR. 19TH AND RACE STS. 



1888. 



