. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. 240 ANNALS OF THE SOUTH AFRICAN MUSEUM. Fig. 87. Olcostephanus {Olcostephanus) drumensis (Sayn MS) Kilian. The holotype, by monotypy, from the Middle Valanginian of Fontanil, France (after Kilian 1910). x 1. and apparent lack of parabolae. It still remains to be demonstrated that the macroconch which forms part of the syntype series is, in fact, conspecific with the microconch. Since the Bulgarian microconch is certainly specifically distinct from '0. psilostomus\ the writer would suggest elevating T
. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. 240 ANNALS OF THE SOUTH AFRICAN MUSEUM. Fig. 87. Olcostephanus {Olcostephanus) drumensis (Sayn MS) Kilian. The holotype, by monotypy, from the Middle Valanginian of Fontanil, France (after Kilian 1910). x 1. and apparent lack of parabolae. It still remains to be demonstrated that the macroconch which forms part of the syntype series is, in fact, conspecific with the microconch. Since the Bulgarian microconch is certainly specifically distinct from '0. psilostomus\ the writer would suggest elevating Tzankov's (1943) trivial name to full specific status, O. quadricostatus (Tzankov). Occurrence This species is known with certainty only from South Africa and Pakistan, but may also be present in the Swiss Jura and Argentina. Olcostephanus {Olcostephanus) victoris Spath, 1939 (?) Figs 89-90 Olcostephanus victoris Spath, 1939: 20, pi. 19 (fig. 7a-b). Fatmi, 1977: 268. Material A single specimen, LJE-991, from Addo Drift East B farm in the Uitenhage district. Holotype The original of Olcostephanus victoris figured by Spath (1939: 20, pi. 19 (fig. 7a only)) (Fig. 89) from the Chichali Pass of Pakistan. Diagnosis A rather evolute species of Olcostephanus, probably representing the inner whorls of a larger macroconch, with a somewhat compressed form. Primary. 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
