Thrombasia grabenis J.L. Barnard, 1967 comb. nov.

Schisturella grabenis J.L. Barnard, 1967: 72 (key), 74, figs 33, 34.― Barnard & Karaman, 1991: 527.― Larsen, 2007: 14 (key).

Types. Holotype, female, 5.0 mm, LACM CR 1960 - 78.8 (originally AHF 6021).

Type locality. Station 7229 (27°54'25"N 115°40'00"W), 1720–1748 m depth.

Habitat. Marine, hard (stony) to soft (clay) bottoms.

Depth range. 1720–1748 m (J.L. Barnard 1967).

Remarks. The subchelate gnathopod 1 with the slightly tapering, non-vestigial coxa, and carpus longer than propodus places this species in Thrombasia .

Distribution. Eastern Pacific Ocean. Southwest of Cedros Island, Mexico (J.L. Barnard 1967).