Orbiniinae with pointed prostomium, abdominal branchiae and all thoracic setae crenulated capillaries. Twelve thoracic segments; transition from thorax to abdomen abrupt. Abdominal notopodia with crenulated capillaries and furcate setae; abdominal neuropodia with crenulated capillaries and acicular spines.
Fauchald, K. (1977). The polychaete worms, definitions and keys to the orders, families and genera. Natural History Museum of Los Angeles County: Los Angeles, CA (USA), Science Series. 28:1-188. available online athttp://www.vliz.be/imisdocs/publications/123110.pdf