TY - JOUR T1 - The Croonian Lecture: Preliminary Observations on the Locomotor System of Medusae JF - Philosophical Transactions of the Royal Society of London (1776-1886) VL - 166 SP - 269 EP - 313 PY - 1876/01/01/ UR - http://dx.doi.org/10.1098/rstl.1876.0011 M3 - doi:10.1098/rstl.1876.0011 AU - Romanes, G. ER -