Bulimulus (Ena) pusillus H. Adams, 1867 superseded combination Allopeas pusillum is a species of small, tropical, air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Achatinidae.

(Original description in Latin) This is a sinistral shell with a narrow perforation and a cylindrical, turreted shape.

The shell is thin, evenly striated, and has a subtle gloss, with an olive-brown coloration.

The spire is elongated, gradually tapering towards a somewhat blunt apex, and is marked by a distinct suture.

The peristome is straight, with the columellar margin nearly vertical, slightly expanded at the top, and open.