“Tromina fenestrata n.sp., Pl. VI, fig. 14
Shell small, white, squat, sculptured with numerous sharply raised spiral cords, crossed by fine, crisp, axial threads which render the cords weakly gemmulate. Whorls weakly shouldered by an extra strong cord situated just above the middle, 4 ½, including a large dome-shaped protoconch of 1 ½ whorls, smooth at first, but the last half-whorl with closely spaced minute axial threads and indistinct spirals. All spire-whorls with six narrow, sharply raised spiral cords, number three from the top the strongest and forming the peripheral angulation. Body-whorl with twenty spiral cords, more closely spaced over middle of the base, and including five on the neck. The axial threads number about forty-five on the body-whorl, and in addition there is an interstitial surface sculpture of dense microscopic axial threads. Aperture as in the other species except for a peripheral angulation of the outer lip.
The epidermis is so thin and transparent that it is scarcely apparent. Operculum ovate, paucispiral, occupying slightly more than half the area of the aperture.
Height 6.0 mm.; diameter 4.0mm. (holotype).
TYPE LOCALITY. St. WS 766. Between Falkland Is. and Argentina, 45° 13' S, 59° 56' 30" W, 18 Oct. 1931, 545 m.”
(Powell, 1951: 135-136)
