PLATE IV. 
Fig. 1. Amphinome rostrata, ..... Slightly enlarged. 
Fig. 2. Ventral view of Notopygos Idbiatus, .... Enlarged. 
Fig. 3. Ventral view of Hipponoe gaudichaudi, .... Enlarged. 
Fig. 4. Anterior extremity of Polynoe capensis, .... Enlarged. 
Fig. 5. Anterior end of Lagisca hexactinellidce, .... Enlarged. 
Fig. 6. Anterior end of Lagisca peracuta, .... Enlarged. 
