Purpurcapsula exigua is a species of small sea snail, a marine gastropod mollusk in the family Triviidae, the false cowries or trivias.
Distribution This species occurs in the Red Sea and in the Indian Ocean along the Mascarene Basin.
References
Dautzenberg, Ph.; Bouge, J.-L. (1933). Les mollusques testacés marins des établissements Français de l'Océanie. J. Conchyl. 77(2): 41-108; 145-326; 351-469 Drivas, J. & M. Jay (1988). Coquillages de La Réunion et de l'île Maurice Rosenberg, G. 1992. Encyclopedia of Seashells. Dorset: New York. 224 pp. page(s): 73 Fehse D. (2002) Beiträge zur Kenntnis der Triviidae (Mollusca: Gastropoda) V. Kritische Beurteilung der Genera und Beschreibung einer neuen Art der Gattung Semitrivia Cossmann, 1903. Acta Conchyliorum 6: 3-48. page(s): 28