FIGURE 1. A in Ascidia subterranea sp. nov. (Phlebobranchia: Ascidiidae), a new tunicate belonging to the A. sydneiensis Stimpson, 1855 group, found as burrow associate of Axiopsis serratifrons A. Milne-Edwards, 1873 (Decapoda: Axiidae) on Derawan Island, Indonesia

FIGURE 1. A Opening of the burrow of Axiopsis serratifrons, with anterior end of the shrimp visible, surrounded by the narrow leafed morph of Halodule uninervis. B Tunic papillae (tpa) of Ascidia subterranea sp. nov. (MNHN P5 ASC.A 416/2). C Schematic representation of the habitat of Ascidia subterranea sp. nov., showing the position of the living tunicate on the burrow roof. Also shown are the pair of shrimps, and associated bivalves, gastropods and polychaetes. Three alternative (all of them speculative) positions for the siphon are depicted.