Their compound eyes were arcuate and located anteriorly on the prosoma (head).
The left margin is subthickened, arcuate, reflexed posteriorly, and appressed.
The columella is very oblique, slightly arcuate, and shortly reflexed above.
The narrow columella is scarcely arcuate, forming an angle with the basal margin.
Its, margins are subparallel, the outer subsinuous, the basal arcuate, the columellar incurved.
The axial sculpture consists of fine, even, arcuate wrinkles, which, except where they bead the posterior thread, are chiefly visible in the interspaces.
It can be defined as a compound structure of the arcuate line (from the ilium) and pectineal line (from the pubis).
The sculpture of the adult volution is somewhat irregularly and rather distantly spirally grooved, the grooves crossed by coarse irregular and arcuate growth wrinkles.
