Pelecotheca (prob. Cryptocladocera) sp. female (fg-taxon #90)

This one is unusual because the abdomen is tipped with a strange, shiny, flattened structure that resembles a squashed tube.

EDIT (Monty Wood 26/9/2010): This is an example of a female Pelecotheca (probably the female of the large multi-fissicorn featherfaces so sub-genus Cryptocladocera). The flattened shiny structure is distinctive of this group of sub-genera.