Genus Heteromysis S. I. Smith, 1873

Subgenus Olivemysis B ǎ cescu, 1968

Type species. Heteromysis rubrocincta Bäcescu, 1968; “Grigore Antipa”, National Museum of Natural History, Bucharest, Romania; no. 49073.

Additonal species: H. abrucei Bäcescu, 1979; H. actiniae Clarke, 1955; n. comb.; H. agelas Modlin, 1987, n. comb.; H. beetoni Modlin, 1984, n. comb.; H. bermudensis G. O. Sars, 1885; H. coralina Modlin, 1987, n. comb.; H. dardani Wittmann, 2008; H. ebanksae Price & Heard, 2008; H. essingtonensis Murano, 1988; H. floridensis Brattegard, 1969, n. comb.; H. gomezi Bäcescu, 1970; H. guitarti Bäcescu, 1968; H. kensleyi Modlin, 1987, n. comb.; H. kushimotensis Murano & Fukuoka, 2003, n. comb; H. macrophthalma Bäcescu, 1983; H. mariani Bäcescu, 1970; H. maxima Murano, 1998; H. mayana Brattegard, 1970; H. mclellandi, n. sp.; H. meenakshiae Bamber, 2000; H. modlini, n. sp.; H. quadrispinosa Murano, 1988; H. sexspinosa Murano, 1988; H. siciliseta Brattegard, 1970, n. comb.; H. tenuispina Murano, 1988; H. tuberculospina Modlin, 1987, n. comb.; H. wirtzi Wittmann, 2008; H. xanthops Ii, 1964, n. comb.; H. zeylandica W. M. Tattersall, 1922 .

New diagnosis. Antenna 1, article 3 distomedial margin with medial subapically flagellated seta directed anteriorly and lateral, long, simple seta directed laterally. Thoracic endopod 3 moderately robust, some of the distal articles enlarged. Pleopod 4 of male modified. Uropodal endopod shorter than exopod.

Remarks. Prior to this report, 18 of the 80 nominal species of Heteromysis were assigned to Olivemysis . Based on review of the species lacking subgeneric designations that are presently included in the genus, we here formally add 10 species to the subgenus Olivemysis: H. actiniae Clarke, 1955; n. comb.; H. agelas Modlin, 1987, n. comb.; H. beetoni Modlin, 1984, n. comb.; H. coralina Modlin, 1987, n. comb.; H. floridensis Brattegard, 1969, n. comb.; H. kensleyi Modlin, 1987, n. comb.; H. kushimotensis Murano & Fukuoka, 2003, n. comb; H. siciliseta Brattegard, 1970, n. comb.; H. tuberculospina Modlin, 1987, n. comb.; H. xanthops Ii, 1964, n. comb,.