. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. Fig. oba gymnota 16. Comparison of the penial papillae of Catriona species. casha A. C. columbiana (after MacFarland 1966 as C. spadix). B. C. columbiana (present study). C. C. oba (after Marcus 1970). D. C. columbiana (after Baba & Hamatani 1963a as Cuthona alpha). E. ?C. alpha (after Miller 1977). F. C. gymnota (present study). G. C. tema (after Edmunds 1968). H. C. maua (after Marcus & Marcus 1960). I. C. casha (present study). The masticatory bristles on the jaws of South African specimen
. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. Fig. oba gymnota 16. Comparison of the penial papillae of Catriona species. casha A. C. columbiana (after MacFarland 1966 as C. spadix). B. C. columbiana (present study). C. C. oba (after Marcus 1970). D. C. columbiana (after Baba & Hamatani 1963a as Cuthona alpha). E. ?C. alpha (after Miller 1977). F. C. gymnota (present study). G. C. tema (after Edmunds 1968). H. C. maua (after Marcus & Marcus 1960). I. C. casha (present study). The masticatory bristles on the jaws of South African specimens are large and clearly defined (Fig. 11D). The denticulation of the jaw of C. columbiana (O'Donoghue 1922, pi. 6 (fig. 23)) resembles that of the present material, although O'Donoghue did not distinguish their bristle-like structure. Roller (1969) confirmed the presence of bristles in Japanese and Californian material. Based upon the similarities in coloration, radular teeth, jaws, penis and penial stylet, the present material is also considered to be synonymous with C. columbiana and closely resembles the Japanese material (Baba & Hamatani 1963a). The status of New Zealand specimens identified as C. alpha by Miller (1977) remains uncertain. Although they may superficially resemble the description of C. alpha (Baba & Hamatani 1963a) as stated by Miller (1977), there are significant differences that require confirmation, particularly as the description of this species is now further amplified by the present study. Specimens described by Miller (1977) differ in that they have fewer ceratal rows in the anterior digestive branch, up to 4 lateral denticles in the radular tooth. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original South African Museum. Cape Town : The Museum
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