Solatisonax cabrali

Solatisonax cabrali has a small, relatively thick-walled shell, with a maximum known diameter of 7.7 mm (0.30 in) and up to 5 whorls. The outer surface of the shell is almost thoroughly ornamented by spiral and axial nodose cords and threads. Its outline changes along the ontogeny, from disk-shaped during the earliest stages of development to depressed cone-shaped in adult specimens. Similarly, the shell's basal region is more inflated than the upper side in younger specimens, but in adult individuals this relationship is inversed. The dome-shaped, inflated protoconch is considered small for an architectonicid as defined by Bieler (1993), ranging from 0.75 mm (0.030 in) to 0.88 mm (0.035 in) at 1.5 whorl. It has a glossy surface and a strong terminal varix marking the protoconch-teleoconch transition. Shell color is variable from pale beige to white, with scattered beige spots. Since no living specimens of S. cabrali were collected to date, the operculum, as well as any details of the animal's soft parts are yet to be described.

Distribution and habitat Solatisonax cabrali is known only from Brazilian waters, ranging from Pernambuco and Alagoas to Rio de Janeiro and São Paulo states. It can be found at depths of 230–720 m, usually on sandy and muddy bottoms. The species' range was greatly expanded in the redescription, and includes petroleum extraction sites such as the Campos Basin.

== References ==