Description. Rostrum curved downwards basally, then strongly curved upwards beyond antennular peduncle, and occasionally bending slightly downwards again near apex, far overreaching scaphocerite, 1.8–2.5 times as long as carapace, dorsal border armed with 16–29 teeth over entire length, anterior teeth closely set but posterior ones larger and spaced farther apart, ventral border bearing 30–43 closely packed teeth on upturned section; 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 and extending to about distal margin of scaphocerite; 2nd pereiopods subequal with 19–27 carpal articles (Chan & Yu 1991).
Distribution. Indo-west-Pacific and southern Ocean, Crozet Islands, Indonesia, Philippines, Taiwan and Japan; at depths of 80–350 m (Chan & Yu 1991).