Stewart, 1913
P I and P II chelate (Hemiscelus diplochelatus 1), with pointed process of ART 5, but in P I this process shorter. ART 2 of P VI resembling elongate curved oval, with or without short fissure. UR II and III with free rami.
Two species, 1 in the South Atlantic:
Hemiscelus diplochelatus Stewart, 1913