NAINEREIS. 521 



The feet are very small in front, but they conform to the type behind. About the 

 tenth foot is a somewhat prominent dorsal papilla for the bristles, which are simple, 

 golden, stout, and slightly curved. They have longitudinal striae and also a few transverse 

 ones (Plate LXXXVI, fig. 19). The tip seems to be slightly hooked and to have a wing 

 in some. The difficulty is their absence, as few feet show any. After an interval a long 

 elevated ridge represents the inferior division, and by-and-by this forms a flap sloping 

 backward, the dorsal papilla fusing with it superiorly, so that both are included in the 

 free flap. The ventral bristles have a sharp hook at one side of the blunt tip, with a 

 wing. At the ventral edge are long simple bristles with finely tapered tips, to which 

 mucus adheres. 



Both dorsal and ventral bristles seem to be extremely brittle. 



This form, whilst agreeing in certain respects with Nainereis, leans also to the 

 Spionidse. It was tossed on the West Sands, St. Andrews, after a storm. 



123 



