SACOGLOSSA

Dayrat, B. & Tillier, S., 2002, Evolutionary relationships of euthyneuran gastropods (Mollusca): a cladistic re-evaluation of morphological characters, Zoological Journal of the Linnean Society 135 (4), pp. 403-470 : 458-459

SACOGLOSSA

Ascobulla Marcus, 1972 (Marcus & Marcus, 1956, 1970; Taylor & Sohl, 1962; Hamatani, 1969; 1971; Marcus, 1972a; De Freese, 1987; Jensen, 1989, 1990, 1991, 1996a, b; Jensen & Wells, 1990). (1) Even though the protoconch (Marcus, 1970; Jensen & Wells, 1990) is ambiguous, the shell has been intrepreted as heterostrophic (Robertson, 1985; Jensen, 1996a, b) and this assumption is accepted here. (24) A hypobranchial gland is probably present (Jensen & Wells, 1990). (43–51) We code the visceral loop as {(CPl)-Sb-Ab-Sp- (CPl)} (Jensen & Wells, 1990). (57–60) The homologies of the female glands (except the mucous gland) are unknown (Marcus, 1972a).

Oxynoe Rafinesque, 1819 (von Ihering, 1892; Eliot, 1906; Hoffman, 1939; Haefelfinger, 1960; Burn, 1966; Marcus & Marcus, 1970; Hamatani, 1980; Jensen, 1980, 1996b; Jensen & Wells, 1990; Schmekel & Portmann, 1982]. (43–51) similar to that of Elysia , we code the visceral loop as {(CPl)SbAbSp(CPl)} (Burn, 1966; Jensen, 1980).

Berthelinia Crosse, 1875 (Kawaguti & Baba, 1959; Kawaguti & Yamasu, 1960a, b, 1961, 1966, 1967; Baba, 1961; Keen & Smith, 1961; Edmunds, 1963; Warmke, 1966; Yamasu, 1969; Sarma, 1975; Jensen, 1993a, b, c, 1996b; Kay, 1964, 1968; Schmekel & Portmann, 1982; Sanders-Esser, 1984). (43–51) We code the visceral loop as {(Cpl)-Sb-Ab-Sp-(CPl)} (Baba, 1961; Edmunds, 1963; Kay, 1968).

Elysia Risso, 1818 (Pelseneer, 1894; Russell, 1929; Thorson, 1946; Marcus, 1956, 1957; Baba, 1957; Pruvot-Fol, 1960; Reid, 1964; Thompson, 1973a, 1988; Carlson & Hoff, 1977, 1978; Marcus, 1980; Schmekel & Portmann, 1982; Sanders-Esser, 1984; Jensen, 1985, 1990, 1992, 1993a, b, c, 1996a, b; Thompson & Jaklin, 1988; Jensen & Wells, 1990). (1) Protoconch senestral (Thorson, 1946) and anatomy dextral: heterostrophy considered to be present here. (29) Few renopericardial apertures are present and this is coded as plesiomorphic state. (43–51) We code the visceral loop as {(CPl)SbAbSp(CPl)} (Russell, 1929).

Limapontia Johnston, 1836 (Pelseneer, 1894, 1934; Kevan, 1934, 1939; Vesteergaard & Thorson, 1938; Quick, 1950; Gascoigne, 1956, 1974, 1978, 1985). (1) The larval shell (Thorson, 1946) is similar to that of Elysia . (43–51) We code the visceral loop as {(CPl)(SbAb)Sp(CPl)} (Jensen, 1993). The topology {(CPl)AbSp(CPl)} proposed by Pelseneer (1894) is not accepted here.