Abstract
A new species of poecilopsettid flounder, Poecilopsetta macrocephala, is described based on seven specimens from 550-555 m depth on the continental slope off northwestern Australia. This species resembles P. vaynei Quero et al., 1988 and P. natalensis Norman, 1931 in number of lateral line scales (75-78), but it can be distinguished from these species in the more-expanded profile above the upper eye ; the relatively larger head (26.6-29.6% of SL), shallower body (34.9-37.3% of SL), larger upper (11.6-12.3% of SL) and lower (11.3-13.0% of SL) eye diameters, larger orbit length (11.7-13.0% of SL), and larger lower jaw length (11.4-12.5% of SL [ocular side], 11.0-12.7% [blind side]) ; and its fewer caudal vertebrae (28-29).
