Carapace with spines anteriorly, scaly appressed granules posteriorly, and short hairs entirely; spines more or less in some longitudinal rows in front of cervical groove; supraorbital tooth distinctly truncated and cut into some minute teeth anteriorly; anterior margin of carapace between both supraorbital teeth with a median and some submedian spinules. Antennule about half as long as antenna, its flagellum being markedly short. Each abdominal segment with a transverse groove which is interrupted medially. Ambulatory legs markedly hairy, with rows of spines on both borders of meri and anterior borders of carpi; in last pair a peculiar chela formed by protuberances of posterior distal end of propodus and proximal part of dactylus.
Distribution:
Lesser Antilles, Suriname and off river mouth of the Amazon, 100-1,000 m deep.
Remarks:
Two other representatives of the genus, P. mossambicus Barnard and P. waguensis Kubo from the Indo-West Pacific, are closely related to, but differ from this species mainly in arrangement of spines on the carapace.