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Figure 1


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Sclerotised parts of Tristoma integrum Diesing, 1850 from Xiphias gladius. A, hamuli; B–D, dorsomarginal spines. A, B, specimen SMNH-209004; C, specimen SMNH-209006 (whole morphology in Fig. 2); D, specimen SMNH-209003, hologenophore. Note that dorsomarginal spines of the hologenophore are similar to the specimen drawn whole.

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