TY - JOUR T1 - On the Anatomy and Physiology of the Nematoids, Parasitic and Free; With Observations on Their Zoological Position and Affinities to the Echinoderms JF - Philosophical Transactions of the Royal Society of London (1776-1886) VL - 156 SP - 545 EP - 638 PY - 1866/01/01/ UR - http://dx.doi.org/10.1098/rstl.1866.0021 M3 - doi:10.1098/rstl.1866.0021 AU - Bastian, H. ER -