Crassispira callosa is a species of sea snail, a marine gastropod mollusk in the family Pseudomelatomidae.

The chocolate-colored shell is very solid, with a well-defined shoulder, and sulcate space above it.

The longitudinal ribs lare ow, rounded, closer than in Crassispira bottae.

The interspaces are very narrow, crossed by raised revolving lines.

[3] This species occurs in the Atlantic Ocean from Senegal to Angola