Mitra cornicula: Shell up to 40 mm (about 1,5 inches) in length, ovate to fusiformly-elongate, moderately solid or light in weight. Whorls 6-7, apart from the protoconch, sutures distinct but not canaliculate, spire whorls regularly convex, post-nuclear whorls sometimes clathrate, corded or with pitted spiral grooves, sculpture becoming occasionally obsolete on the last 3 whorls; whenever a sculpture is present, the penultimate whorl has 5-25 spirals, and the grooves are either smooth or minutely pitted by descending, macroscopic axial hairlines. Aperture slightly shorter or longer than the spire, moderately narrow and smooth within; outer lip moderately thickened, and simple. Columella calloused, parietal wall occasionally thinned, callus more prominent anteriorly, columella with 3-5 oblique folds; siphonal canal straight and obliquely corded, siphonal notch distinct but shallow. Variable in colour, uniformly horny-brown or light brown, occasionally very pale and sometimes indistinctly banded on the body whorl; aperture brown or bluish-brown, columella frequently brown on the parietal wall, columellar folds white or flushed with brown. The periostracum is thin and opaque and brown or greyish-brown in colour. Lenth 31,2 mm; Width 11 mm; Height of aperture 15,6 mm.

Habitat: it lives among sponges, under stones and among bottom vegetation, up to about 40 m depth. Distribution: common enough all over the Mediterranean.
Shell solid, fusiform, stretched. Whorls not much convex, broad suture. First whorls adorned with spiral striae, closely dotted, quite clear in yuvenile specimens. External lip thick and smooth internally. On columella, homy, there are either 3 or 4 plicae.
From dark brown to yellowish in colour pattern, sometimes with darker streaks on the last whorl. Periostracum, very fine and dull, grey yellowish in colour. According to some authors' opinion (Moran et alii, 1989; Rolan et alii, 1997), its protoconch, paucispiral, makes the presence of this species in the Atlantic improbable. They think M. cornicula is endemic of the Mediterranean Sea.
The only Mediterranean species looking like M. cornicula is M. cornea mainly recognizable due to its bigger sizes (up to 40 mm), to the animal colour pattern which is white with yellow margins (wholly white in cornicula), to the whorls number and to the bigger sizes of the protoconch, to a different sculpture in the first teleconch whorls (reticulated in cornea, spirally streaked in cornicula). The adult specimens average measures are around 20-25 mm.

Mitra cornicula: There is a considerable distributional overlap between M. cornicula and M. nigra, and also an intergradation of shell characters which make the validity of M. nigra as a biospecies suspect A short summary of the various forms of cornicula is as follows:
* schroeteri form: this is the slender, fusiform, pale and banded form, which has also been described as M. cornicularis Lamarck.
* lactea form: usually applied to albino or pale forms ofM. cornicula, the shell is also slender and fusiform and may occur in a uniformly brown colour; the fine spiral grooves usually become obsolete on the last 3 whorls.
* lutescens form: this form is intermediate in shape between the slender lactea form and typical cornicula. Numerous intergrading individuals connect the broad, dark brown form to the more slender, banded or pale forms of M. cornicula.
* cornicula form: the typical form is broad and uniformly horny-brown in colour.

Mitra cornicula: Throughout the Mediterranean and Adriatic Seas to the Canary and Cape Verde Islands. In sponges, sand and shingle, among weed and under rocks, from the intertidal region to a depth of 120 fathoms.