cavifrons, Hemitripterus Lockington [W. N.] 1880:233 [Proceedings of the Academy of Natural Sciences of Philadelphia v. 32; ref. 17552] St. Paul [now city of Kodiak], Kodiak Island, Alaska, U.S.A. Holotype (unique): CAS (not found, probably destroyed in 1906 fire). See Mecklenburg 2003:3 [ref. 27294] for remarks on type locality. •Synonym of Hemitripterus villosus (Pallas 1814) -- (Watanabe 1960:107 [ref. 11959], Lindberg & Krasyukova 1987:256 [ref. 15964], Mecklenburg et al. 2002:508 [ref. 25968], Parin et al. 2002:S91 [ref. 28300], Mecklenburg 2003:3 [ref. 27294], Dyldin & Orlov 2017:68 [ref. 35138]). Current status: Synonym of Hemitripterus villosus (Pallas 1814). Agonidae: Hemitripterinae. Habitat: marine.