| Notoplana ferruginea (Schmarda, 1859) | Sep 4, 1948 | 0.5-1.0 m | sand, coral debris, mud | Paloe Lechi, overflow of Salinja, coral debris and muddy sand.  1 specimen. | 
| Stylochoplana snadda Marcus & Marcus, 1968 | Sep 17, 1948 | 0 - 1 m |  | Lac Poejito, on Rhizophora in muddy lagoon.  1 specimen. | 
| Styloplanocera fasciata (Schmarda, 1859) | Nov 6, 1930 | 0.5 - 1.0  m |  | De Hoop, rocky cliff and sandy reef, among Ptychodera.  1 spec. | 
| Thysanozoon nigrum Girard, 1851 | Oct 28, 1930; Nov 2, 1930 | 0 - 1.0  m |  | Logoen, SE corner, weathered diabase rock with small growth of Rhizophora, muddy sand among mangrove roots.  17 spec. | 
| Pseudoceros texanus Hyman, 1955 | Mar 19, 1937 | 0.5  m |  | Lac, Cay, shallow part of muddy lagoon with Rhizophora and Avicennia.  1 spec. | 
| Prosthiostomum cyclops (Verrill, 1901) | Oct 1, 1948 | 1.0 - 2.0  m |  | Lac, Boca, behind sandy reef with debris, continuous wave action.  1 spec. | 
| Prosthiostomum milcum Marcus & Marcus, 1968 | Sep 17, 1948 |  |  | Lac, Poejito, on Rhizophora, in muddy lagoonm tidal and lower zone.  1 spec. | 
| Crassandros dominicanus Hyman, 1955 | 2004 or earlier |  |  |  |