| Pisa trispinosa Latreille, 1825 |
| Pisinae Dana, 1851 |
| Pisoides H. Milne-Edwards & Lucas, 1843 |
| Pisoides tumida Lockington, 1877 |
| Pliosoma Stimpson, 1860 |
| Pliosoma parvifrons Stimpson, 1860 |
| Pliosomatinae Stevcic, 1994 |
| Pugettia Dana, 1851 |
| Pugettia dalli Rathbun, 1894 |
| Pugettia hubbsi Garth, 1958 |
| Pugettia producta (Randall, 1840) |
| Pugettia productus Randall, 1840 |
| Pugettia richii Dana, 1851 |
| Pugettia venetiae Rathbun, 1924 |
| Rochinia A. Milne-Edwards, 1875 |
| Rochinia tanneri (Smith, 1883) |
| Rochinia vesicularis (Rathbun, 1907) |
| Scyra Dana, 1852 |
| Scyra acutifrons Dana, 1852 |
| Sphenocarcinus A. Milne-Edwards, 1878 |