Nematocarcinidae Smith, 1884

Nematocarcinus ensifer ( Smith, 1882) —CNI Sivertsen & Holthuis (1956); 2603 m—CVI Smith (1882, as Eumiersia ensifera), type-locality; 3000–3655 m—Benthic, 1000–3655 m. AAWA.

Nematocarcinus exilis ( Spence Bate, 1888) —CNI type-locality (as Stochasmus exilis); 1000–1500—Benthic, 800–2600 m. EACT.

Nematocarcinus gracilipes Filhol, 1884 —CNI González et al. (1993); 456–1146 m—CVI Crosnier & Forest (1973); 590–660 m—Benthic, 590–2000 m. TSEA.

Nigmatullinus acanthitelsonis (Pequegnat, 1970) —CNI Sivertsen & Holthuis (1956, as Nematocarcinus acanthitelsonis); 0–3138 m—Benthopelagic, 2020–3470 m. PANT.