Fig. 8
Boreocelis fragilis. a, b organization; a contracted, frontal end recently autotomized; b moderately stretched, with frontal end complete. c, d copulatory organ with sclerotic apparatus
Fig. 8 | Helgoland Marine Research
Boreocelis fragilis. a, b organization; a contracted, frontal end recently autotomized; b moderately stretched, with frontal end complete. c, d copulatory organ with sclerotic apparatus