Pycnogonida
(sea spider)
| mmm | Achelia alaskensis Cole, 1904 |
| mmm | Achelia chelata (Hilton, 1939) |
| mmm | Acelia echinata Hodge, 1864 |
| mmm | Ammothea hilgendorfi (Boehm, 1879) |
| mmm | Tanystylum californicum Hilton, 1939 |
| Anoplodactylus viridintestinalis Cole, 1904 | |
MMM |
Phoxichilidiidae femoratum (Rathke, 1799) |
| Pycnogonum rickettsi Schmitt, 1934 | |
MMM |
Pycnogonum stearnsi Ives, 1892 |