Remarks.— From the fact that H. quadrabdominalis Yu, 1933 as redescribed by
Jones (1985) based on new material recovered from the Atlantic bigeye, was found
to be not identical with H. quadrabdominalis nor H. curvata, which was relegated
to the synonymy of H. quadrabdominalis by Jones (1985), H. jonesi Izawa, 2016
was elected for the Jones’ (1985) “quadrabdominalis” by Izawa (2016a). However,
the name ‘jonesi’ was found to be preoccupied by H. jonesi Uyeno & Nagasawa,
2010.