FAMILY Mordaciidae Gill, 1893 - mordaciid lampreys [=Caragolinae] Notes: Name in prevailing recent practice, Article 35.5 Caragolinae Gill, 1883b:524 [ref. 4941] (subfamily) Caragola [family-group name used as valid after 1899, e. g. by Fowler 1964:33 [ref. 7160]] Mordaciidae Gill, 1893b:129 [ref. 26255] (family) Mordacia [genus inferred from the stem, Article11.7.1.1; family-group name used as valid by: Fontaine 1958, Hubbs & Potter 1971 [ref. 13397], Lindberg 1971 [ref. 27211], Nelson 1976 [ref. 32838], Shiino 1976, Bailey 1980 [ref. 5253], Nelson 1984 [ref. 13596], Nelson 1994 [ref. 26204], Allen, Midgley & Allen 2002 [ref. 25930], Nelson 2006 [ref. 32486], Renaud 2011 [ref. 31770]] GENUS Mordacia Gray, 1851 - mordacid lampreys [=Mordacia Gray [J. E.], 1851:143, Caragola Gray [J. E.], 1851:143] Notes: [ref. 4939]. Fem. Petromyzon mordax Richardson, 1846. Type by monotypy. Also appeared in Gray 1853 [for 1851]:239 [ref. 1886]. First reviser selecting Mordacia over Caragola not researched by us. •Valid as Mordacia Gray, 1851 -- (Hubbs & Potter 1971:56 [ref. 13397], Pequeño 1989:6 [ref. 14125], Gomon et al. 1994:83 [ref. 22532], Dyer 2000:84 [ref. 26678], Kullander & Fernholm in Reis et al. 2003:12 [ref. 27061], Gill et al. 2003:693 [ref. 27254], Paxton et al. 2006:44 [ref. 28994], Gomon 2008:29 [ref. 30616], Lang et al. 2009:43 [ref. 31599], Renaud 2011:19 [ref. 31770]). Current status: Valid as Mordacia Gray, 1851. Mordaciidae. (Caragola) [ref. 4939]. Fem. Caragola lapicida Gray, 1851. Type by monotypy. Also appeared in Gray 1853 [for 1851]:239 [ref. 1886]. •Possibly valid, awaiting additional data (Lang et al. 2009:50 [ref. 31599]). •Synonym of Mordacia Gray, 1851 -- (Hubbs & Potter 1971:56 [ref. 13397], Renaud 2011:19 [ref. 31770]). Current status: Synonym of Mordacia Gray, 1851. Mordaciidae. Species Mordacia lapicida (Gray, 1851) - Chilean lamprey [=Caragola lapicida Gray [J. E.], 1851:143, Pl. 1 (fig. 5), Petromyzon acutidens Philippi [R. A.], 1865:107, Petromyzon anwandteri Philippi [R. A.], 1863:207, Pl. 10b] Notes: [List of the specimens of fish in the collection of the British Museum.; ref. 4939] Valparaíso, Chile. Current status: Valid as Mordacia lapicida (Gray, 1851). Mordaciidae. Distribution: Rivers of central and southern Chile. Habitat: freshwater, brackish, marine. (acutidens) [Archiv für Naturgeschichte v. 31 (no. 1); ref. 13953] Chile. Current status: Synonym of Mordacia lapicida (Gray, 1851). Mordaciidae. Habitat: freshwater, brackish, marine. (anwandteri) [Archiv für Naturgeschichte v. 29 (no. 1); ref. 18549] Valdivia, Chile. Current status: Synonym of Mordacia lapicida (Gray, 1851). Mordaciidae. Species Mordacia mordax (Richardson, 1846) - Australian lamprey, shorthead lamprey, Murray lamprey [=Petromyzon mordax Richardson [J.], 1846:62, Pl. 38 (figs. 3-6)] Notes: [Ichthyology of the voyage of H. M. S. Erebus & Terror v. 2 (2); ref. 3740] Tasmania, Australia. Current status: Valid as Mordacia mordax (Richardson, 1846). Mordaciidae. Distribution: Southeastern Australia: Queensland to South Australia and Tasmania. Habitat: freshwater, brackish, marine. Species Mordacia praecox Potter, 1968 - non-parasitic lamprey [=Mordacia praecox Potter [I. C.], 1968:254, Pl. 14] Notes: [Proceedings of the Linnean Society of New South Wales v. 92 (pt 3, no. 415); ref. 7910] Moruya River, New South Wales, Australia. Current status: Valid as Mordacia praecox Potter, 1968. Mordaciidae. Distribution: New South Wales, Australia. Habitat: freshwater.