Distribution & Ecology: Austral - Marine; Bathypelagic (4346m).

Regional Records: Bentheocaris exuens Bate, 1888: 724, pl. 123-fig. 3 (Southeast off Marotiri, Challenger, st. 285, 14.10.1875, 32°36'S, 137°43'W, 4346m). - Acanthephyra stylorostrata. - Chace, 1940: 144, fig. 22 (Syn.; see remark). - Poupin, 1998: 9. - Remark: Chace writes "It is very probable that Bate's Bentheocaris exuens is the same species [than A. stylorostratis] but, inasmuch as Calman states that the type is in such condition that comparison is almost impossible and as Bate's figure is inadequate its seems best to retain the much more suitable name, stylorostrata, for this form."

Depth distribution: 4346 - 4346 m