F. fascicularis.
F. Javanicensis.
F. depressa.
F. Peruviana.
F. gibberula.
F. minuta.
F. nimbosa. The scaly-ribbed Fissurella.
Species of which the middle part of the edges of the aperture is hollowed in such a manner that, when placed on a level surface, they touch only at the extremities.
F. rosea. The rosy Fissurella.
Species more depressed, edges bent up lengthwise, forming a kind of canal.