Placobranchus catulusGould, 1870, p. 256-257, pl. 17, fig. 249-250 [Basis of the current name] Attributed to: Agassiz MS Type Locality: Channel near East Boston Range: 42.3°N to 32.3°N; 78.7°W to 64.8°W Depth: 0 m (live 0 m) Maximum Reported Size: 9 mm Distribution: USA: Massachusetts, New Jersey, South Carolina; Bermuda References: Gould (1870) N; Wass (1972) DdLl{W}; Jensen & Clark (1983) {S}; Zinn (1984) EM; Valdés et al. (2006) SW Comments: The record by Espinosa et al. (2006) from Pinar del Rio was reidentified as Elysia serca by Espinosa, Ortea, Fernández-Garcés & Moro (2008). Combining Genera: Elysiella