Carapace slightly longer than, or almost as long as broad, being densely covered with soft hairs; on denudation surface smooth and ill-defined, with shallow cardiac and branchial furrows. Three frontal, a supraorbital, an external orbital, an infraorbital, a subhepatic, two anterolateral and a posterolateral teeth are small, but tuberculated and nearly equal to each other. Chelipeds and ambulatory legs hairy like carapace; upper border of palm armed with three tuberculated granules. Ambultory legs rather long; last two reduced legs subchelate as usual, but last pair is apparently longer than the preceding.
Distribution:
West Atlantic from North Carolina through the Gulf of Mexico and the West Indies to Brazil, shore to 200 m deep.
Remarks:
All the specimens examined carried each a covering of a compound ascidian much larger than the natural posture of the carapace and ambulatory legs. There is a Pacific congener, D. larraburei Rathbun, which ranges from Monterey Bay in California to Peru and the Galapagos Islands.