The larval development of the porcellanid crab Clastotoechus vanderhor
sti (Schmitt, 1924) was studied under laboratory conditions. The devel
opment comprises a prezoea, two zoeal stages and a megalopa. The morph
ologic characters in these larvae are similar to those of the previous
ly described larvae of the Petrolisthes-type, establishing C vanderhor
sti-as a member of the Petrolisthes-group of porcellanid larvae.