Two antennae. Four pairs of tentacular cirri. Soft papillae on both oral and maxillary rings. Parapodia biramous except for the first two uniramous setigers. Inferior neuropodia ligule absent. Notosetae hemi/homogomph spinigers. Neurosetae `hemi/homogomph and heterogomph spinigers and heterogomph falcigers.
Tylorrhynchus heterochaetus (Quatrefages, 1865) |
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| Found: Java, Vietnam, Japan, China (after Imajima, 1972) |