CIRSOTREMA Mörch, 1852, Cirsotrema Mörch, 1852: 49. Type species (Monotypy): Scalaria varicosa Lamarck, 1822; Kilburn, 1985: 252; Vaught, 1989: 40; Pacaud & Le Renard, 1995: 158, [Epitoniinae]; Le Renard, 1996: 58, Caloscala Tate, 1885, Cirsostrema Conrad, 1865 (error), Cirsotremopsis Thiele, 1928; Subgenus: CIRSOTREMA s.s., Cirsotrema (Cirsotrema); Kilburn, 1985: 253; Pacaud & Le Renard, 1995: 158 [Epitoniinae]; Subgenus: CIRCULOSCALA de Boury, 1886, Cirsotrema (Circuloscala); Pacaud & Le Renard, 1995: 158 [Epitoniinae]; Subgenus: CORONISCALA de Boury, 1910, Coroniscala de Boury, 1910; Vaught, 1989: 40, Cirsotrema (Coroniscala); Pacaud & Le Renard, 1995: 158 [Epitoniinae]; Subgenus: PLASTISCALA Iredale, 1936 (?), Plastiscala Iredale, 1936: 302. Type species (o.d.): Scala morchi Angas, 1871; Kilburn, 1985: 274, Cirsotrema (Plastiscala); Vaught, 1989: 40; Subgenus:? RECTACIRSA Iredale, 1936, Rectacrisa Iredale, 1936: 305. Type species (o.d.): Rectacirsa fregata Iredale, 1936, Cirsotrema (Rectacrisa) ; Kilburn, 1985: 256; Vaught, 1989: 40.    Ref.: Millard, V. 1997. Classification of the Mollusca :A classification of worldwide Mollusca. p.131.