Type locality: Coast of Peru.
Range: Very extended. From Baja California southwards to the Peruvian coast.
Habitat: In moderately deep water between 10 and 80 m deep on sand and mud bottom. It is the deepest habitat for genus.

Description: Shell small, solid and ovate, with a silky surface, 30-40 mm in length. Protoconch very small, turbinate of two smooth chocolate whorls. Spire concave and pointed. Teleoconch with 6-7 slightly convex whorls, the body whorl swollen. Sculpture of numerous axial ridges onto the entire shell, 21-24 on the penulti¬mate whorl, 29-30 on the last one. Aperture narrow measuring 0.78 of the total length. Outer lip strongly thickened outside by a varix, bearing inside a blunt labral denticle at the midpoint, and forming a deep anal canal at the posterior end of the aperture. Columella straight with 3-4 equal plaits. Fasciole indistinct. Siphonal notch deep and narrow. Background colour beige with a complex spiral pattern of subsutural black marks and of paired rows of dots delimiting brown bands on the mid and on the anterior part of the body whorl, overlaid by irregular large chocolate blotches. Aperture and columella fawn. Animal: Not available for study.

Comparison: Enaeta cumingi, the other Pacific Coast Enaeta, is a close relative which bears the same conchological features and pattern but is easily distinguishable by its strong nodules shouldering the three last whorls. Though belonging to a different subfamily but because of a morphological convergence, some ridged specimens of Plicoliva zelindae (Petuch, 1979) have the same outline and general appearance. It differs by the glossy surface, the absence of labral denticle and by a quite different stucture of the columellar plaits: 5-6 strong plicae sculpturing a thick porcellaneous basal plate.
Remarks: A common shell. Because of its rather deep habitat, it is fished mostly by dredging, so that its fragile protoconch is often damaged.

TYPE LOCALITY: "Coast of Peru." RANGE: From the Peruvian coast northward to Cape St. Lucas, Lower California- a distance of approximately 3500 miles. HABITAT: Dredged in 20 to 40 fathoms on a sand and mud substrate. DIMENSIONS: Adult specimens are 25 to 35 mm in length. SHELL DESCRIPTION: Shell is small. It is oblong-ovate and very solid. The spire is low and sharply acuminate. Proto- conch is small and turbinate, of two smooth whorls. Teleo- conch has seven and a half to eight narrow, axially ribbed whorls. There are 18 such ribs on the penultimate whorl of a shell 25.5 mm in length. The early whorls have very fine, closely spaced, revolving lirae. Suture is slightly indented. Aperture is narrow; interior flesh colored. Outer lip is in- flexed and thickened outside by a broad obtuse ridge. It is furnished inside with a low, blunt tooth about midpoint. Siphonal notch is narrow and deep; fasciole indistinct. Columella is obliquely straight, with three or four rather weak anterior plaits terminating at midpoint. Sometimes a few fine lirae follow. Base color is yellowish-cream, clouded and variegated throughout with various shades of chestnut. A horny operculum is present. ANIMAL AND RADULA: Not available for study. REMARKS: The short, slightly concave, oblong-ovate shape, the acute spire, and the narrow, sharp axial ribs set this un- common species apart from others in the subgenus. Gray (1825), in naming this species for Mr. Barnes, omitted the letter e. In 1864 Carpenter corrected this error by emending the spelling to bamesi.