About Stomatella impertusa (Burrow, 1815)
The shell of Stomatella impertusa ranges in length from 5 mm to 25 mm. This small, thin shell has an elongated oval shape, is shining and yellowish-green, and is decorated with white triangular spots that have dark apices; these spots are sometimes arranged in series. The shell’s surface is decussated by incremental striae and deeper spiral striae. It holds three whorls, with a nearly terminal apex. The narrow aperture is oval, and its ventral face is nearly level. The interior of the shell is shining and greenish. The shell is very delicate and slender, and is closely related to the much larger Stomatella planulata, as well as to Stomatella auricula. This marine species is distributed in the Southwest Pacific, off the coast of East India, the Philippines, Australia, and Japan. It is also found in the Red Sea, and occurs as a casual find in the Mediterranean Sea.
