Encephaloides armstrongi, Armstrong's Spider-crab, showing the swollen cavernous gill-chambers. The four pairs of crawling legs are too long to be shown. This crab is one of the characteristic inhabitants of the 100-fathom line in Indian Seas.
Wissenschaftliche Ergebnisse der Deutschen Tiefsee-Expedition auf dem Dampfer "Valdivia" 1898-1899. bd.6. AtlasJena,G. Fischer,1902-40.biodiversitylibrary.org/page/6307586