250 



APHRODITA ACULEATA. 



of a brownish hue. It is marked by the transverse ridges indicating the segments. The 

 arrangement of the folds at the mouth is seen in Plate I, fig. 1. 



The papilte of the segmental organs commence at the ninth and continue to the 

 twenty-third foot. There thus appear to be fifteen pairs. The removal of the apertures 

 of these organs entirely from the ventral surface is a feature of the sub-family, and 

 distinguishes them at once from the Polynoidse. 



Digestive System. — The papilla of the terminal region of the extruded proboscis 



Fig. 16. 



Fig. 17. 







- \ (D 



m 



/y\ 



Digestive apparatus of Aphrodita aculeata. From a 

 well-preserved spirit-preparation. — A. W. 



Digestive apparatus of Aphrodita aculeata in a fresh 

 specimen. The stomach is drawn forward. — A. W. 



are somewhat lobate, though usually termed fasciculate (Plate XXXVII, fig. 1). They 



differ from those of L. filicornis, yet they sometimes appear as if obscurely dichotomous. 



The proboscis itself is a powerful muscular organ, formerly eaten by the natives of 



