Iophon flabellodigitatus var. gaussi Hentschel 1914
Iophon flabellodigitatus var. gaussi Hentschel, 1914 (Fig. 7F) Iophon flabello-digitatus var. gaussi Hentschel, 1914: 86, pl. VI fig.10. Iophon flabellodigitatum var. gaussi Goodwin et al. 2016: Table 2 (listed only). The variety was described by Hentschel from Observatory Bay, Kerguelen, approximat...
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| Format: | Other/Unknown Material |
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Zenodo
2024
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| Online Access: | https://doi.org/10.5281/zenodo.10568012 http://treatment.plazi.org/id/BF4E397FFFA431179786FB27BE86041E |
| Summary: | Iophon flabellodigitatus var. gaussi Hentschel, 1914 (Fig. 7F) Iophon flabello-digitatus var. gaussi Hentschel, 1914: 86, pl. VI fig.10. Iophon flabellodigitatum var. gaussi Goodwin et al. 2016: Table 2 (listed only). The variety was described by Hentschel from Observatory Bay, Kerguelen, approximate coordinates 49.2°S 69.7°E, depth not given (syntype ZMB 4607, slide in BMNH 1929.1.22.20). Hentschel (1914) erected two varieties named gaussi in the genus Iophon Gray, 1867. Both are homonyms and usually (recommendation ICZN art. 24A) the one described first would be eligible to be the senior homonym bearing the name gaussi . However, Ríos (2006: 96) chose to elevate Iophon spatulatus var. gaussi , described on p. 87 to species level as Iophon gaussi (whereas I. flabellodigitatus var. gaussi was described on p. 86). The recommendation to indicate the name of the first described species as the senior homonym is not a strict rule, so Ríos’ choice made spatulatus var. gaussi the senior homonym. Iophon flabellodigitatus var. gaussi has differences with Kirkpatrick’s (1907: 277) typical variety (described from Winter Quarters, Ross Sea Antarctica, 65.1761°S 66.65417°W, depth 51–238 m, syntypes BMNH 1908.2.5.153– 155) in the shape (massively rounded in the present variety vs flabellate in the typical variety). Also, the length of the bipocillae may be different (15–16 µm vs 5.5–11µm respectively) and the shape and number of teeth appear subtly different. Topsent (1917: 58) reported I. flabellodigitatum from Petermann Island, Antarctica. His specimens are encrusting the underside of boulders, but no skeletal details were described to support a possible identity as var. gaussi . Topsent did not mention Hentschel’s (1914) study when discussing I. flabellodigitatus , so, apparently, he was unaware of Hentschel’s varieties (although he did cite Hentschel’s paper in his list of references). Brøndsted (1927a: 4) reported I. flabellodigitatum from Discovery Inlet, Antarctica, but gave no description other than that the ... |
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