Aphanoconia usukanensis (Godwin Austen, 1889)  

Godwin-Austen (1889) original descriptions on Helicina usukanensis – “Shell dextral, lenticular, solid, convex below; sculpture nearly smooth, fine lines of growth, crossed by irregular diagonal striation; colour pale ruddy madder-brown, pale straw-colour below and of periphery, an indistinct band seen inside the aperture; spire depressedly pyramidal, sides flatly convex; apex blunt; suture linear; whorls 4, regularly increasing, sides very flat, the last bluntly carinate, with an obsolete band below; aperture acute, white, slightly reflected; columellar margin short, thickened, the callous short and semicircular.”