The Holothuroidea Collected by the Royal Society Expedition to Southern Chile, 1958-1959

Abstract

The holothurians collected by the Royal Society Expedi tion to southern Chile, totalling 180 specimens, are described . Ten genera (of which one is new) and ten species are represented. Neopsolidium n.g., type species Psolidium convergens (Herouard), is erected to accommodate those species in the genus Psolidium (sensu lato) in which the dorsal plates are reduced to a diameter of about 0.4 mm. The holothurian fauna of southern Chile is generalised, containing few restricted species, and sharing many elements with distant subantarctic islands and with Antarctica.