Ibacus leg motor neurons Figure 4.png

Distal leg motor neurons of slipper lobsters, <em>Ibacus</em> spp. (Decapoda: Scyllaridae) N1 fills proximal to the branch point of AV and PV. <strong>A.</strong> Photograph of intensified <em>Ibacus peronii</em> T4 backfill of N1, showing two medial cell bodies and two processes crossing into the contralateral hemiganglion. <strong>B.</strong> Camera lucida drawing of <em>I. alticrenatus</em> backfill of N1 in ganglion T4 showing medial cell with process projecting into the contralateral hemiganglion.