The gastropod group Cephalaspidea contains about 700 recent species worldwide. The status of the research on the group, indicated as the number of described species, in the tropical Indo-Pacific region is compared with other areas. The number ofspecies are 118 in the Indo-Pacific, 168 in Japan, and 58 in Europe. The figures reflect the fact that much work remains to be done, and that numerous species still have to be described in this region.
Phuket Marine Biological Center. Special Publications, 1998, Issue 17, p. 341-342