"The O. sayana, sometimes exceeds 3 inches in length - fine specimens are rare - worn specimens are not uncommon on the coast of South Carolina.". Appears to refer to Oliva litterata Say, 1830 (but please note comments under Taxonomy).
Lee (2011) stated: "Can we be absolutely sure what shell Ravenel intended for his O. sayana? Tursch et al. (1998: 29) wrote: "The type is missing from the Ravenel Collection, housed at the Charleston Museum (fide Dr. Harry D. [sic] Lee, in litt.," which I can confirm. Lacking a type specimen, can the reference I made above to Say hold up as iconic for Ravenel's species? Gary Rosenberg (2009) wrote: "Ravenel (1834) did not refer explicit [sic] to Say's American Conchology, but must have meant that work, in which Say provided an excellent illustration of the species only four years earlier." I certainly concur with Gary's analysis as there is copious evidence that Say and Ravenel were in contact for a substantial period dating to the latter's attendance at the University of Pennsylvania's School of Medicine, not far from Say's haunts at the Academy of Natural Sciences, and from which he graduated as valedictorian in 1819. Thus we may safely regard the Say illustration as the type figure. Coupling this image with his statement "sometimes exceeds three inches," I think there can be little doubt as to the identity of O. sayana Ravenel.".