The body of Multicalyx elegans consists of a dorsal main part and a ventral disc subdivided into compartments (alveoli) by transverse septa which carry pairs of "foot"-like lateral organs. The dorsal lip contains a groove with a large number of receptors. Numerous bulbous receptors and pits are also found in other parts of the body, which is covered by a tegument bearing densely packed microtubercles. Small particles associated with the body surface may represent viruses or bacteria.