Choristes vitreus: Shell rather small, thin, translucently white, turbinate in shape, Spire conical and with 5 whorls, rather rapidly increasing their width to the body whorl, well inflated and separated by the deeply impressed sutures. Surface smooth and polished and covered by the thin periostracum and sculptured by the very faint spiral threads and growth lines. Body whorl large and well rounded at the periphery and the base. Aperture wide and semicircular. Outer margin well rounded, thin and slightly expanded. Innermargin deposited the thin callus on the parietal wall and rather straight. Columellar margins reflexed and dilated over the widely and deeply perforated umbilicus. Operculum thin, corneus, pale yellowish brown and paucispiral.
Height 10.7 – 12.2 mm and width 9.4- 9.5 mm

Description (copied from Kuroda & Habe): "Shell rather small, thin, translucently white, turbinate in shape. Spire conical and with 5 whorls, rather rapidly increasing their width to the body whorl, well inflated and separated by the deeply impressed sutures. Surface smooth and polished and covered by a thin periostracum and sculptured by the very faint spiral threads and growth lines. Body whorl large and well rounded at the periphery and the base. Aperture wide and semicircular. Outer margin well rounded, thin and slightly expanded. Innermargin [sic] deposited the thin callus on the parietal wall and rather straight [sic]. Columellar margins reflexed and dilated over the widely and deeply perforated umbilicus. Operculum thin, corneus, pale yellowish brown and paucispiral." Dimensions. Height 10.7 mm, diameter 9.5 mm (holotype); height 12.2 mm, diameter 9.4 mm (paratype).

Choristes vitreus: Choristes mollis Okutani from Sagami Bay has the small shell with slightly beaded spiral cords on its surface.

Although the original material has not been examined and the radula has not been described, the description of this species is compatible with that of the high-spired species group of Choristella. The shell is comparable to C tenera in size, thinness of shell, and opercular morphology, and to C. nofronii in having the height of the shell exceed the breadth. The operculum was said to be paucispiral. The height-width ratio of the holotype is 1.3, compared to 1.13 for C. nofronii.

Choristes vitreus: Japan. Sagami Bay.

Type locality: Sagami Bay, Japan, "parasitic on the egg capsules of shark," depth not indicated.
Type material: Holotype and paratype, presumably in Imperial Household Collection, Japan. No other specimens are known.

Choristes vitreus: This species has the very unique habit parasitic on the egg capsules of shark.