Plesionika assimilis De Man, 1917

Description. Rostrum overreaching antennal scale, it is armed dorsally with 5–7 teeth on basal crest, including 4 or 5 on carapace posterior to level of orbital margin, and 3 or 4 subapical teeth, 4 or 5 posterior most teeth with distinct basal sutures but none with barbed tips, armed ventrally with 10–12 teeth; abdomen without posteromesial tooth or median dorsal carina on 3rd somite; eye broadly subpyriform, maximum diameter about l/4 carapace length, ocellus longitudinally oval, constricted at juncture with cornea; 3rd maxilliped with penultimate segment about 7/10 as long as terminal one; 2nd pereopods unequal with epipod and extremely slender or thread-like (Chace 1985)

Distribution. Known only from Indonesia at depths of 54–90 m (Chace 1985)