Semicassis labiata , common name the helmet bonnet shell, is a species of large predatory sea snail, a marine gastropod mollusc.

In adult specimens, the outer lip is thickened, and the anterior end features a pronounced, up-curving siphonal notch.

The shell shows significant variation in size, nodule prominence, thickness, and depth of coloration.

Specimens from the Agulhas Bank tend to be larger, thinner, with weaker nodules and less vivid coloration.

Here's an improved version of your description: The color of the shell ranges from pale pinkish-brown to yellowish-brown, with some specimens featuring three to five rows of diffuse, semicircular whitish spots.