« Chama testâ rubrâ purpureâ vel luteâ, lamellis creberrimis, foliis seu squamulis brevioribus interdum albidis ;limbo interno crrenato. — Hab. in Oceano Pacifico (Lord Hood’s Island.—Pearl Islands.) The infinite variety of this species in shape and colour defies description. In many points it agrees with Lamarck’s Chama florida, but he describes the margin of that shell as entire, whereas the margin of Chama pacifica is strongly crenated. Mr. Cuming’s specimens were obtained by diving. They were attached to Aviculae, at a depth ranging from three to seven fathoms. Many shells of this species were brought to this country some years ago, from the Pearl Islands, by Mr. Samuel Stutchburry. » – W. J. Broderip: “Description of some species of Chama”, Proceedings of the Zoological Society of London pt. 2, London 1834.

« Shell oblong-ovate, circuitously triangular, upper valve divaricately striate, posteriorly squamate, scales somewhat distant, erect, lower valve obliquely ridged and scaled, internal margins of the valves minutely crenulated ; purple-lake stained with orange, scales pale livid lake. » – L. A. Reeve: vol. 4, London 1847, via BHL.