Shell rounded orbicular, relatively fragile, scarcely depressed, whitish in color and with a reticulated surface. Protoconch hyperstrophic with 1,75 smooth whorls of about 385 µm diameter, and with a thick rib at the start of the teleconch. Teleoconch of about 1,25whorls, with only 2 spiral cords at the beginning, which increase up to 7, the 5th being the most peripheral and the lowest one bordering the umbilical infundibulum. Those cords are crossed by narrow strongly prosocline axial ribs which number about 30-35 in the last whorl. Under magnification the surface between the cords is smooth, it not being possible to see any kind of tubercles. Umbilicus wide and deep. Aperture ovoid, columella curved, outer lip sharp. Dimensions: The holotype is 1.8 mm maximum dimension (diameter). Etymology: The species is named for Emilio Rolan Alvarez, son of the senior author, Professor of Genetics at the University of Vigo, for his help during many years of trips, collecting, and actually being a colleague in research projects.

The species is rather similar to T africanus, but this latter species has more numerous axial ribs and the basal cords are more widely separated, furthermore it has a microsculpture of tubercles in lines which is not present in T aemilii. There is also some similarity with T jullieni, but this latter species has more numerous axial ribs and the basal cords are more prominent and closer, and it has a microsculpture formed by tubercles in lines. Two other similar species are T erici spec. nov. and T. umbilicorda spec, nov., and their differences are pointed out below, in the discussion of both species.

Distribution: Known from Guinea Conakry to Angola. Type locality: Miamia, Ghana.