King, P EKing, P. E. 1986. Sea spiders. A revised key to the adults of littoral Pycno- gonida in the British Isles.-Field Studies 6:493-5 16.King, P.E. 1986. Sea spiders. A revised key to the adults of littoral Pycnogonida in the British Isles. Field Studies 6 , 493–516....