Nassarius idyllius is a species of sea snail, a marine gastropod mollusc in the family Nassariidae, the nassa mud snails (USA) or dog whelks (UK).
Description
The shell grows to a length of 5 mm. Distribution This species is distributed in the Red Sea and in the Indo-West Pacific.
References
Vine, P. (1986). Red Sea Invertebrates. Immel Publishing, London. 224 pp
Cernohorsky W. O. (1984). Systematics of the family Nassariidae (Mollusca: Gastropoda). Bulletin of the Auckland Institute and Museum 14: 1–356.