P. edwardsii (Brandt, 1851)

Description. Rostrum curved downward in basal region, then strongly curved upwards beyond antennular peduncle, slightly more than 2 times as long as carapace, armed dorsally with 28–36 teeth over entire length, anterior teeth closely spaced, posterior teeth larger and well spaced, ventral border bearing 37–52 closely spaced teeth; dorsal surface of abdominal 3rd somite slightly arched but not sharply angular; eye large and subspherical, with distinct ocellus; 3rd maxilliped with distal two segments subequal, bearing rudimentary epipod; 2nd Pereiopods subequal with 18–28 carpal articles (Chace 1985).

Distribution. Indo-Pacific, Indonesia, Philippines and Taiwan; at depths of 50–680 m (Chace 1985). P. ensis (Milne-Edwards, 1881)

Description. Rostrum nearly 1.6 to 2 times of the carapace length, armed dorsally with 5 or 6 teeth, three or four close together, two isolated anteriorly, ventrally it is closely and evenly serrated, the teeth are fixed; the posterior border of the 3rd abdominal tergum is acutely produced in the middle line to form a spine; the ocellus is distinct but not independent; the external maxillipeds with well-developed exopodite, little longer and stouter than the 1st pair of pereopods, reach a short way beyond the tip of the antennal scale (Alcock 1901).

Distribution. Arabian Sea, Bay of Bengal and Andaman Sea; at depths of 250–400 m (Alcock 1901).