Tomographic models of the anterior nervous system in L. asellus (A-C) and L. rugatus (D-F). A., D., Ventral view with outline of body shown; B., E., Angled dorsal view of nervous system and Schwabe organs; C., F., Dorsal view of nervous system. Pink, nerve tissue; green, buccal nerves; yellow, Schwabe organs. bn, buccal nerves; com, anterior commissure; lnc, lateral nerve cord; So, Schwabe organ; sn, subradular nerves; vnc, ventral nerve cord. Scale bar 500 μm.