FIGURE 5 in Vulcanolepas scotiaensis sp. nov., a new deep-sea scalpelliform barnacle (Eolepadidae: Neolepadinae) from hydrothermal vents in the Scotia Sea, Antarctica

FIGURE 5. Morphotypes of Vulcanolepas scotiaensis sp. nov. a: The "gracile" form. Holotype NHMUK 2013.1031. The capitulum comprises eight approximate, calcareous plates: carina (c), rostrum (r) and paired terga (t), scuta (s) and medial latera (ml); is = imbricating scale of the peduncle. Note the broadly arched profile of the carina (compared with b), and on the tergum, the weak longitudinal ridge on the scutal side that extends to a point near the apex of the medial latus. The peduncle has been truncated in this diagram (see Figure 6f for an appreciation of the relative peduncle to capitulum length). b: The "robust" form. Paratype NHMUK 2013.1032. Note the nodose pattern on the plates, produced by intersection of strong growth lines with longitudinal ribs. The peduncle, although truncated for this diagram, is approximately the same length as the capitulum.