Synonyms: Hypnarce monopterygium, Hypnarce subnigra, Hypnarce subnigrum, Hypnos monopterigium, Hypnos monopterygium, Hypnos subniger, Hypnos subnigrum, Lophius monopterygius
Common name: Coffin ray
Original description species: (Shaw, 1795)
Genus: Hypnos Duméril, 1852
Family: Hypnidae Gill, 1862
Order: Torpediniformes
Superorder: Batomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii