Dysomma Alcock, 1889

Dysomma Alcock, 1889:459 (type species, Dysomma bucephalus Alcock, 1889, by monotypy). Sinomyrus Lin, 1933:93, fig. 1 (type species, S. angustus Lin, by monotypy; S. angustus is a synonym of Dysomma anguillare Barnard, fide Böhlke, 1949:34 –35).

Definition. A genus of Synaphobranchidae with a row of large compound teeth on the vomer and the following combination of characters: body stout to moderately elongate, slightly compressed in head and trunk; scales absent; pectoral fin present or not; dorsal-fin origin in front of anus; intermaxillary teeth present or not; snout projects slightly beyond lower jaw (except for D. melanurum); anus below pectoral fin to more than one head length behind pectoral-fin tip; and gill openings well-separated.