@book {617,
	title = {List of the shells of Cuba in the collection of the British Museum, collectedby M. Ramon de la Sagra. Described by Prof. Alcide d{\textquoteright}Orbigny, in the {\textquotedblleft}Histoire de l{\textquoteright}Ile de Cuba.{\textquotedblright}},
	year = {1854},
	pages = {[i] + 48 pp},
	publisher = {British Museum},
	organization = {British Museum},
	address = {London},
	author = {Gray, J. E.}
}
@book {618,
	title = {List of the shells of South America in the collection of the British Museum. Collected and described by M. Alcide d{\textquoteright}Orbigny, in the {\textquotedblleft}Voyage dans l{\textquoteright}Am{\'e}rique M{\'e}ridionale.{\textquotedblright}},
	year = {1854},
	pages = {[i] + 89 pp},
	publisher = {British Museum},
	organization = {British Museum},
	address = {London},
	author = {Gray, J. E.}
}
