Heteromastus filiformis (Claparède)
Capitella filiformis Claparède, 1864
Ecology: FT
Distribution: PA, NA, AU
Habitat: ES
Comments: The apparent disjunct distribution in the Palaearctic, Nearctic and Australasia suggests that multiple species have been reported under this name. Additional references: Wesenberg-Lund (1958), D. Karlen, pers. comm. (Tampa Bay survey)