P. spinidorsalis (Rathbun, 1906)

Description. Rostrum overreaching antennal scale, armed dorsally throughout length with 12–15 teeth, including 7–10 on carapace posterior to level of orbital margin, none with basal suture or barbed tip, armed ventrally with 4– 8 teeth; orbital margin with subquadrate lobe, thence trending posterodorsally in nearly straight line and, finally, bending sharply anterodorsally at extreme dorsal limit; abdomen without posteromesial tooth or median dorsal carina on 3rd somite; eye pyriform, maximum diameter about 1/8 carapace length, without ocellus; 3rd maxilliped with epipod, penultimate segment slightly more than 1/2 to 2/3 as long as terminal segment; 2nd pereopods unequal and dissimilar with epipod, right one shorter, more robust, and with 5 or 6 carpal articles, left one with 13– 16 carpal articles (Chace 1985).

Distribution. South China Sea, Philippines and Indonesia; at depths of 100–1250 m (Li 2006a).