- alternate type of paragnathus..
- just like paragnathus.
- In crustaceans, the delicate unjointed procedures amongst the mandibles and maxillæ, forming a sort of reduced lip.
- in a few annelids, among horny tooth-like processes or denticles from the wall surface of the buccal hole. In addition paragnathon, paragnathum, and paragnathus.