Figure 14. Spiophanes pacificus sp. nov., LM and SEM studies: A, holotype, complete specimen original preservation in 96% ethanol; note nuchal organ with associated pigment, and anal cirri. B, close-up of anterior region, latero-oblique view. C, anterior region, dorsal view; note short cirriform occipital antenna with rounded tip, also note nuchal organ reaching end of chaetiger 2. Inset C, close-up of antenna of same specimen. D, middle body region with pigment in parapodia of chaetigers 11–14, dorsal view. E, anterior end, lateral view; note stout cirriform occipital antenna and extension of dorsal ciliated nuchal organs to the end of chaetiger 2. F, chaetigers 8–10 in lateral view; note vertical row

Published as part of Meissner, Karin, Schwentner, Martin, Göưing, Miriam & Fiege, Thomas Knebelsberger and Dieter, 2023, Polychaetes distributed across oceans-examples of widely recorded species from abyssal depths of the Atlantic and Pacific Oceans, pp. 906-944 in Zoological Journal of the Linnean Society 199 on page 931, DOI: 10.1093/zoolinnean/zlad069, http://zenodo.org/record/10470369