Shell 1.5 x 2 mm, 4 w.; sculpture of faint lines of growth only; periphery broadly rounded, umbilical callus small, but closing the umbilicus at all stages of growth, a low convexity running down its middle to the basal lip. Florida. — 4 specimens collected, about 1.0 x 1.6 mm, from material dredged from Schottegat, west of countryhouse Koningsplein (TdB).

Distribution: Florida, Texas; Mexico. Teinostoma Size: Diameter 1.7 mm; altitude 1.0 mm. Description: Color translucent white in live or fresh material to opaque in worn or dead specimens; shape trochoid, globose; sculpture smooth with microscopic, wavy, irregular axial growth lines; protoconch of 2 smooth nuclear whorls; teleoconch with 2,5 smooth whorls; body whorl globose, rounded; spire higher than in other teinostomes, circular; with postnuclear whorl adpressed to nuclear whorls; umbilicus narrow, chinklike, may not be totally covered by a callus in young adults; aperture obtuse to subcircular with a groove on the upper inner angle. Habitat: This species is commonly found in dredged material all along the Texas coast, including beaches of SPI, Harbor Island, Aransas Bay, and Matagorda Beach. Found at depths from 0 to 91 m (300 ft). Remarks: Similar to T. incertum; however, umbilical callus more pronounced on T incertum. See Moore (1964); Ode (1987c, 1988a).