TABLE 1 in A new genus and species of barnacle (Cirripedia, Verrucomorpha) associated with vents of the Lau Back-Arc Basin: its gross morphology, inferred first juvenile stage and affinities

<p>TABLE 1. &mdash; Seta/article ratios for four neolepadines compared to four sessile barnacles also from vents: the ratio (the width of the article of an intermediate segment of cirrus VI as the denominator and the length of longest seta of that article as the numerator), while highest in the bacteria-farming neolepadine (Lau sp. A), is lowest in <i>Neoverruca</i>. That for <i>Imbricaverruca</i> as well as for <i>Neobrachylepas</i> are not only similar to each other but fall in the low end of the range for vent barnacles.</p><table><tbody><tr><th></th><th><b>Measurement in mm</b></th><th><b>Ratio</b></th><th><b>Reference</b></th></tr></tbody><tbody><tr><th></th><td><b>article width</b></td><td><b>setal length</b></td><td><b>s/a</b></td><td></td></tr><tr><th>Lau sp. A</th><td>0.33</td><td>4.60</td><td>14.0</td><td>Southward &amp; Newman 1998</td></tr><tr><th>Lau sp. B</th><td>0.10</td><td>0.67</td><td>6.7</td><td><i>idem</i></td></tr><tr><th>South-East Indian Ridge</th><td>0.18</td><td>1.70</td><td>9.4</td><td><i>idem</i></td></tr><tr><th>Lihir volcano</th><td>0.30</td><td>1.85</td><td>6.2</td><td><i>idem</i></td></tr><tr><th><i>Neobrachylepas</i></th><td>0.07</td><td>0.31</td><td>4.4</td><td>Newman &amp; Yamaguchi 1995</td></tr><tr><th><i>Neoverruca</i></th><td>0.25</td><td>0.70</td><td>2.8</td><td>Newman &amp; Hessler 1989</td></tr><tr><th><i>Imbricaverruca</i></th><td>0.15</td><td>0.68</td><td>4.5</td><td>This paper</td></tr><tr><th><i>Eochionelasmus</i> (NFB)</th><td>0.25</td><td>1.65</td><td>6.6</td><td>Yamaguchi &amp; Newman 1990</td></tr></tbody></table>