@article {584,
	title = {Diagnoses Ampullariarum novarum Guatemalae et reipublicae Mexicanae incolarum},
	journal = {Journal de Conchyliologie},
	volume = {38},
	year = {1890},
	pages = {110-114},
	author = {Crosse, H and Fischer, P.}
}
@book {669,
	title = {Biologia Centrali-Americana. Land and freshwater Mollusca},
	year = {1890},
	pages = {xxviii + 706 pp., 44 pls},
	publisher = {R.H. Porter},
	organization = {R.H. Porter},
	address = {London},
	author = {von Martens, K. E.}
}
