Figure 9.Shells and anatomy of granulose thyasirids of the genus Parathyasira. A–E an undescribed abyssal species from the Arabian Sea, NMW.Z. 2014, A–B external and internal views of the shell; C–D scanning electron micrographs of the granulose microsculpture; E gross anatomy. F Parathyasira resupina, holotype and type of the genus, New South Wales, AMS C57834; G–I Parathyasira subcircularis, Rockall Trough, NMW.Z.2013, G external of shell; H gross anatomy; I micrograph showing radial granulose sculpture.
Figure 7A–F.Scanning electron micrographs of the ctenidium of Ochetoctena tomasi, A frontal face, frontal surface intact on the left, removed on the right to reveal tubules; B frontal surface with entrances to tubules arrowed; C single filament showing lateral and median tubules; D cross section of a single tubule; E long section of adjacent tubules; F bacterial bundles within bacteriocytes and paddle tipped filaments in the lumen of the tubule. bct bacteriocyte; spb spherical body; ptf paddle tipped filaments; fs frontal surface; fs (rem) frontal surface removed; lt lateral tubule; mt median tubule.
