Wissenschaftliche Ergebnisse der Deutschen Tiefsee-Expedition auf dem Dampfer "Valdivia" 1898-1899. bd.6. AtlasJena,G. Fischer,1902-40.biodiversitylibrary.org/page/6307642
On the far left, seen from behind, is U. batuenta. To it's right, seen mostly from the side is U. inaequalis. The large crab on the right is U. oerstedi. The smaller crab with the white claw, just to the left and behind him is U. saltitanta.