Sawyer, R.T. & Lawler, A.R. & Overstreet, R.M. (1975)
Marine leeches of the eastern United States and Gulf of Mexico with a key to the species. Journal of Natural History, 9(6), 633–667
DOI: 10.1080/00222937500770531

Sawyer, R.T. & Lawler, A.R. & Oversrteet, R.M. (1975)
Marine leeches of the eastern United States and the Gulf of Mexico with a key to the species. Journal of Natural History, 9(6), 633–667