Described in French (click French flag)

Shell. The tubercles perhaps more regularly rectangular than those of Marshallora adversa, otherwise the same. Colour of animal. The body is white with many black speckles on the head, the propodium and much of the sides of the mesopodium; the tentacles are clear white.
Geographical distribution. Recorded from the western Mediterranean and Bay of Biscay, not, so far from the British Isles.