Alcyna exigua is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails. Hedley C. (1915), Studies on Australian Mollusca. Part XII; Proceedings of the Linnean Society of New South Wales v. 39
Distribution This species occurs in the East China Sea
References
Gould, A. A. 1861. Proc. Boston Soc. Nat. Hist. 8: 18. Smithsonian Institution: Elenchus exiguus