Re-description of Magelona pacifica

Due to the morphological similarity between M. montera sp. nov., and the original description of Magelona pacifica it was deemed necessary to borrow the type material of the latter species for further examination. On comparison of the type material and the original description it was concluded that a re-description would be prudent and is included below, despite it being originally described from Panamá, and not believed to be present in the seas surrounding the Arabian Peninsula.