Shell of moderate size, and nearly the shape of B. ampulla, but proportionately wider behind, white with an ill-defined band of pale yellow brown encircling the periphery; aperture as long as the shell ; outer lip simple, nearly straight, rounded before and behind, not extending beyond the summit of the left side of the shell ; apex depressed, immersed, forming a slight pit with none of the whorls visible; surface ornamented with fine, minutely punctate spiral grooves, more crowded before and behind, more distant about the periphery, from four to twelve in the width of a millimeter and from eight to ten punctations in the length of a millimeter, according to the part of the shell examined ; besides these there are numerous still finer striae, also punctate, but more finely, which, when very faint, appear like rows of very faint puncticulations; otherwise the surface is smooth, or even polished, the lines of growth hardly perceptible ; aperture narrow behind, wide in front, the pillar reflected, and a thin layer of callus evenly spread over the body within the aperture ; proportions of younger specimens much the same, but a little more pointed at the extremities. Lon. of shell and aperture, 12.75 mm. Max. lat. of shell, 9.0 mm; of aperture, 5.25 mm ; Min. lat. of aperture, 1.5 mm.
DESCRIBED AS Bulla abyssicola

Synonymous:
Bulla guernei: Testa 6 mm alta, 2,7 mm lata, solida, nitidiuscola cylindrica, superne inferneque truncata. Anfractus 3 convoluti : primus immersus; ultimus laevigatus striis tantum incrementi arcuatis, obsoletisque munitus. Apertura angusta, basi dilatata. Columella perobliqua, callosa, nitidissima. Labrum acutum superne arcuatum deinde rectum. Color albus.

Coquille enroulée, assez solide, un peu luisante, de forme cylindrique tronquée aux deux extrémités. Tours de spire au nombre de 3 : le premier est enfoncé; le dernier qui constitue à lui seul l'ensemble de la coquille, est lisse, traversé seulement par des stries d'accroissement arquées, obsolètes, mais un peu plus accentuées au sommet et à la base. Ouverture étroite à la partie supérieure, très évasée à la base. Bord columellaire légèrement arrondi, garni d'une callosité appliquée. Columelle très oblique, fortement épaissie, très luisante. Labre simple, tranchant, arqué au sommet, ensuite rectiligne jusque vers la base de la coquille où il forme un angle obtus avec le bord basai. Coloration d'un blanc opaque.

Gulf of Mexico. Yucatan Strait.