. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. Fig. 15. a. Nassa rhysonepia Protoconch further enlarged, b. JVassa muiri Brnrd. c. Euthria ? fallax Thiele. Powell (1951, fig. N 117) figured the protoconch of Pleurotomella simillima Thiele with 2 axially plicate whorls; the original description (Thiele, 1912) stated that the apical whorls were smooth. But see Powell (1951: 172) for replacement of a sculptured sinusigera protoconch by a smooth 'internal case' (Powell quotes Dall, ii Nassa fenestrata Marrat, 1877 Fig. 14b Nassa fenestrata Marr
. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. Fig. 15. a. Nassa rhysonepia Protoconch further enlarged, b. JVassa muiri Brnrd. c. Euthria ? fallax Thiele. Powell (1951, fig. N 117) figured the protoconch of Pleurotomella simillima Thiele with 2 axially plicate whorls; the original description (Thiele, 1912) stated that the apical whorls were smooth. But see Powell (1951: 172) for replacement of a sculptured sinusigera protoconch by a smooth 'internal case' (Powell quotes Dall, ii Nassa fenestrata Marrat, 1877 Fig. 14b Nassa fenestrata Marrat, Barnard, 1959: III. Operculum broadly subtriangular, broader than long, serrate on both margins. Radula 60 rows. Central plate with 11 cusps, the outermost one on either. 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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Keywords: ., bookcentury1800, bookdecade1890, booksubjectnaturalhistory, booky
