Ancilla alcocki
Original description(s):
"Testa ovato-cylindracea, fusca, antice saturate fusco balteata, supra spiram callo albo induta; anfractus 4-5, ultimus supra medium linea impressa obliqua bisectus, transversira tonuiter striatus, lineisque incrementi exilissimis sculptus; spira obtusa, ad apicem mucronata; apertura elongata, angusta, albida; columella superne callo crasso supra producto amicta, antice alba, oblique sulcata; labrum leviter incrassatum, ad marginem fuscum, supra late sed haud profunde sinuatum. Longit. 38mm., diam. 16. Operculum magnum, nigro-fuscum, elongatum, apice terminali, costa rotundata marginem versus externum instructum. Longit. 16 mm.,diam. 5.". Recent, Andaman Islands.
Figures in Annandale & Stewart, 1908: Pl. 20 figs. 5-6.