Cover picture: Detail of a pyloric dilator neuron in the stomatogastric ganglion of a juvenile lobster, Homarus americanus. The neuron was filled with Alexa 568 hydrazide. The image is a low-transparency volume rendering from a confocal image stack generated in using AMIRA software (TGS, San Diego, CA). For details, see the article by Bucher et al. in this issue (pages 1611–1619).