Fig. 2. Culeolus tenuis Vinogradova, 1970 in Culeolus tenuis (Urochordata, Ascidiacea) Newly Found off Fukushima, Japan in the Japan Trench

Fig. 2. Culeolus tenuis Vinogradova, 1970 from off Fukushima Prefecture in the Japan Trench. A: Left side of body proper with branchial tentacles projecting from branchial aperture (Br) and anal end visible through atrial aperture (At), B: Inner view of right mantle of body, C: Inner view of left mantle of body; D. Dorsal tubercle and vicinity, E: Proximal (=posterior) terminal of right dorsal-most gonad, directed to atrial aperture end, to show openings of oviduct (Od) and sperm duct (Sd); F: A horny polygonal spicule from pericardium. Mantle musculature and spicules in B and C, and in B-E, respectively, omitted. Abbreviations: At: atrial aperture, Br: branchial aperture, En: endocarp, Ep: pericardium, Od: oviduct, Ov: ovarian eggs, Sd: sperm duct, St: proximal end of stalk along anterior mid-ventral half of body proper, Te: testicular follicles. Scales for A, B, and C 10 mm, for D and E, 5 mm, and for F, 1 mm.