Bothriembryon onslowi minor Pilsbry, 1900

Breure, Abraham S. H. & Whisson, Corey S., 2012, Annotated type catalogue of Bothriembryon (Mollusca, Gastropoda, Orthalicoidea) in Australian museums, with a compilation of types in other museums, ZooKeys 194, pp. 41-80 : 56

Bothriembryon onslowi minor Pilsbry, 1900 Fig. 5E

Bothriembryon onslowi minor Pilsbry 1900: 12, pl. 3 figs 45-46; Kendrick and Wilson 1975: 309.

Type material.

ANSP 78504, two syntypes.

Remarks.

Kendrick and Wilson (1975) have argued that Iredale (1939) made a mistake when he raised this taxon to full specific status; they considered minor Pilsbry a junior subjective synonym of Bothriembryon costulatus (Lamarck). They also assumed that Pilsbry’s material was collected at Dirk Hartog Island; however, without positive evidence. Examining one of the syntypes the sculpture of the upper whorl shows a characteristic pattern of strong granules on the upper part of the whorls, and less strong, oblong granules on the lower part which are vanishing on the penultimate and ultimate whorl. This pattern may also be observed in Bothriembryon mastersi (Cox) and relatives. Since Pilsbry’s material did not have locality data and this sculpture is not observed in any of the species from Shark Bay, it cannot a priori be excluded that his specimens originated from a different place than the Shark Bay region. Therefore we only tentatively assign this taxon to Bothriembryon costulatus , awaiting further study to clarify the status of Bothriembryon minor .

Current systematic position.

Bothriembryontidae, Bothriembryon?costulatus (Lamarck, 1822).

Figures

Figure 5. A-B Bothriembryon mastersi (Cox, 1867) A Possible syntype, SAMA D 11341 (H = 17.4) B Holotype of B. decresensis Cotton, 1940, SAMA D 13773 (H = 15.5) Photo: R. Hamilton-Bruce C-E B. costulatus (Lamarck, 1822) C Syntype of Bulimus inflatus Lamarck, 1822, MHNG INV 51162 (H = 26.0) Photo: Y. Finet D Holotype of B. onslowi hartogensis Kobelt, 1901, SMF 25909 / 1 a (H = 12.9) Photo: E. Neubert E S yntype of B. onslowi minor Pilsbry, 1900, ANSP 78504 (H = 14.4) Photo: A. Lawless F B. bradshawi Iredale, 1939, syntype, AM C 100749 (H = 19.0) G B. sedgwicki Iredale, 1939, syntype, AM C 100831 (H = 15.9) H B. onslowi (Cox, 1864), syntype, AM C 84882 (H = 21.7) I B. praecelsus Iredale, 1939, holotype, WAM S 14468 (H = 27.1).