Böhlke, J. (1989) Fishes of the western North Atlantic. Anguillidae, Heterenchelyidae, Moringuidae, Chlopsidae, Myrocongridae, Muraenidae, Synaphobranchidae, Ophichthidae, Colocongridae, Derichthyidae, Muraenesocidae, Nemichthyidae, Congridae, Nettastomatidae, Serrivomeridae; Order Saccopharyngiformes, Cyematidae, Saccopharyngidae, Eurypharyncidae, Monognathidae. [Online]. New Haven : Sears Foundation for Marine Research, Yale University Press. Available from: http://access.bl.uk/ark:/81055/vdc_100183089387.0x000001