Hastula nana
Hastula nana is a species of sea snail, a marine gastropod mollusc in the family Terebridae, the auger snails. Description
The length of the shell varies between 12 mm and 18 mm. Distribution
This species occurs in the Persian Gulf and in the Arabian Sea. References

 Bratcher T. & Cernohorsky W.O. (1987). Living terebras of the world. A monograph of the recent Terebridae of the world. American Malacologists, Melbourne, Florida & Burlington, Massachusetts. 240pp

External links
 Deshayes G.P. (1859). A general review of the genus Terebra, and a description of new species. Proceedings of the Zoological Society of London. 27: 270-32
 Fedosov, A. E.; Malcolm, G.; Terryn, Y.; Gorson, J.; Modica, M. V.; Holford, M.; Puillandre, N. (2020). Phylogenetic classification of the family Terebridae (Neogastropoda: Conoidea). Journal of Molluscan Studies. 85(4): 359-388

Terebridae
Gastropods described in 1859