Compsodrillia tricatenaria is an extinct species of sea snail, a marine gastropod mollusk in the family Pseudomelatomidae, the turrids and allies.

It shows longitudinal undulations, which on each whorl of the spire are crossed by three equidistant prominent spiral lines.

The axial ribs are rather strongly elevated, rounded, somewhat undulatory and slightly protractive, 12 to 14 in number on the later whorls, persisting with undiminished strength to the anterior suture but quite abruptly evanescent posteriorly at the margin of the fasciole.

The spiral sculpture consists of broadly arched, rather prominent, primary fillets, uniform in strength on both the costal and the intercostal areas, 9 to 11 in number on the ultima, 3 or 4 upon the penultima, usually, though not always, equal or sub-equal in size and spacing.

The posterior fasciole is obscurely undulated anteriorly by the axial sculpture, spirally threaded with 4 to 6 fine, close-set lirae with 1 or 2 stronger cords at the posterior margin, directly in front of the suture line.

[2] Fossils have been found in Upper Miocene strata of South Carolina, USA.