The neural organization of the paired pedal ganglia of the desert snail Eremina ehrenbergi.

A surface map of the paired pedal ganglia of Eremina ehrenbergi has been constructed. The pedal ganglia contain large (phi < 80 microns), middle (phi 40-60 microns) and small (phi 15-30 microns) sized neurones. Most of the somata are ipsilateral to their nerves, but there are few cases in which contralateral neurones were observed. The neurones in a ganglion send their axons primarily to the nerves originating from the ganglion, but they have also connections with neurones in other central ganglia.