Reasoning recorded at review

• •Long, narrow body is strongly laterally compressed rather than carrying a broad mantle skirt
• •Connected dark purplish-brown network encloses cream-white and orange patches across the body
• •Tall rhinophore-sheath and dorsolateral flaps are strongly laterally flattened
• •Visible flaps carry the characteristic central dark stripe bordered by pale cream-white and orange
• •Paired dorsolateral processes followed by single middorsal keels are compatible with the three-pair plus three-single sequence
• •Branched oral lobes and gills on the inner faces of anterior paired processes are visible as supporting Bornella anguilla structure

Alternatives considered

• Bornella stellifer

  Why plausible: A widespread reticulate congener, but its more branched or bulbous processes and orange-reticulate body do not match the simple flattened striped flaps and dark mosaic here.

  Comparison: A direct specimen comparison of process branching, radula and reproductive anatomy would resolve any residual overlap.

• Bornella sarape

  Why plausible: Retained as a named congener, although the published yellow-brown and black pattern conflicts with this cream-dark-orange mosaic.

  Comparison: Internal anatomy and an unobstructed count of every dorsal process would provide definitive exclusion.

• Other Bornella, including Bornella hermanni

  Why plausible: Other congeners can be mottled, but generally have more branched, less laterally flattened rhinophore sheaths and processes.

  Comparison: Radular and penial-armature characters or DNA are required for specimen-level confirmation.