This species is found in Western Australia and ranges through the eastern Indian Ocean. It is very similar to Euplica scripta (Lamarck, 1822), but differs in having nodules around the periphery of the early teleoconch whorls; the shoulder of the body whorl is weakly nodulose, and the protoconch has 2.75 to 3 smooth white whorls (E. scripta ranges through the Southwestern Pacific and has a bulbous or peg-like white protoconch with 1.5 to 2 whorls, and no nodules on the early whorls or the body whorl). Both species are present in Indonesia and can be difficult to discriminate, because the colour patterns of the two species are similar here, whereas they tend to differ more in other parts of their ranges (pers. obs.). Specimens collected by the expedition vary from whitish through straw coloured or tan, and most have three spiral bands of dark axial speckling; one at the base, one at the middle of the whorl and one just below the suture. Some have just pale flecks or dark axial markings on a white shell. The columella has two large dark brown stains, one at the middle of the columella and one posterior. Adult shells are 10 to 16 mm long with 5 to 7 whorls, and 3 smooth white protoconch whorls on the few specimens in which the apex was not eroded. Weak peripheral nodules are present on the first teleoconch whorl, but are not obvious on the body whorl.

This species was apparently locally common and was collected at many of the collecting sites, mostly intertidally or at shallow depths (table 1). The species is often found associated with seagrasses, on which they crawl to graze on microalgae. Euplica scripta (Lamarck) is common in the southwest Pacific but was not collected by the expedition.

Moderately wide for Euplica. Spire sides straight sided except for the projecting protoconch. Spire whorls convex at the shoulder and more axial approaching the next suture. Essentially smooth except for spiral cords on the base anterior. Outer lip almost straight below the shoulder and curving widely into the anterior canal. Lip relatively thin with about 9 low, rounded denticles inside the lip edge. Parietal wall convex at posterior canal, then almost straight to the columella. The columella is long and almost straight with about 9 low, convex, elongate denticles. The denticles are white with no callus outside them. The parietal wall has callus covering most of the external color pattern. Similar to E. versicolor that is frequently used in leis.