Metalycaeus (?) sibbumensis (Godwin-Austen, 1914)
Alycaeus sibbumensis Godwin-Austen, 1914: 367, pl. 156, figs 4, 4a.
Alycaeus sibbumensis - Gude 1921: 219.
Alycaeus (Alycaeus) sibbumensis - Ramakrishna et al. 2010: 51; Tripathy et al. 2018: 789.
Type locality.
"Sibbum, Abor Hills".
Material examined.
Sibbum, Abor Hills, leg. Oakes, NHMUK 1903.7.1.3142 (2 syntypes).
Remarks.
Protoconch elevated, spirally striated; R1 irregularly ribbed, with some signs of spiral striation; R2 very long, with alternating darker and lighter stripes forming a nearly smooth surface; the darker stripes probably represent the very low ribs.