. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. Fig. 90. Olcostephanus victoris Spath ($). Lateral, front and ventral views of LJE-991. Note the convex flanks and the egression of the umbilical seam at a stage when the shell is still entirely septate, x 0,44. No. D H Wi W/H Uo Ui LJE-991 115 41 69 1,68 51 30(26) ?> 95 38 56 1,47 42 23(24) »j 64 30 37 1,23 26 16(25) Discussion The Uitenhage example closely resembles Spath's holotype. The latter does not, however, show the characteristic egression of the umbilical seam on the outer whorls. None t
. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. Fig. 90. Olcostephanus victoris Spath ($). Lateral, front and ventral views of LJE-991. Note the convex flanks and the egression of the umbilical seam at a stage when the shell is still entirely septate, x 0,44. No. D H Wi W/H Uo Ui LJE-991 115 41 69 1,68 51 30(26) ?> 95 38 56 1,47 42 23(24) »j 64 30 37 1,23 26 16(25) Discussion The Uitenhage example closely resembles Spath's holotype. The latter does not, however, show the characteristic egression of the umbilical seam on the outer whorls. None the less, it represents an earlier growth stage than the present specimen and thus may well have become more evolute with ontogeny. Fatmi (1977) considered O. victoris a synonym of O. sakalavensis Besairie but it differs from that species in being somewhat more evolute, with maximum width somewhat above the umbilical tubercles and in possessing 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
