- Pinnixa chaetopterana Stimpson, 1860 accepted as Tubicolixa chaetopterana (Stimpson, 1860)
- Pinnixa cylindrica (Say, 1818)
- Pinnixa lunzi Glassell, 1937
- Pinnixa rectinens Rathbun, 1918 accepted as Pinnixulala retinens (Rathbun, 1918)
- Pinnixa retinens Rathbun, 1918 accepted as Pinnixulala retinens (Rathbun, 1918)
- Pinnixa sayana Stimpson, 1860 accepted as Rathbunixa sayana (Stimpson, 1860)
- Rathbunixa sayana (Stimpson, 1860)
- Tubicolixa chaetopterana (Stimpson, 1860)