NE Atlantic, Arctic (Makarov Basin, Canada Basin)
Mesopelagic
Female:
Cephalosome and 1st thoracic segment separate, 4th and 5 areth fused.
A1 24-segmented.
Masticatory edge of Md with 4 and 5 teeth and left or right side, respectively.
Mx1 reduced, 1st outer lobe with 4 setae, exopod (?) with 2 setae, endopod (?) with 1 seta and inner lobe (?) with 2 strong spines.
Mx2 reduced, with 3 lobes carrying 2, 2, 1 setae; endopod with 3 setae. Mxp reduced, syncoxa with 2 and 1 setae, basis with 2 setae, endopodal segments 1 to 5 with 1, 1, 1, 1, and 3 setae.
P5 1-segmented, more or less plate-like, without spines.
Male: unknown
