PLATE 8. 



Amphioplus macilentus (Verrill). Off Marthas Vineyard, Mass., 63 fms. 



Fig. 1. Aboral view. X 3. 



2. Oral view. 



Amphiodia limbata (Grube). Rio Janeiro, Brazil. 



3. Aboral view. X 3. 



4. Oral view. 



Amphiodia atea (Stimpson). Charleston, S. C. 



5. Aboral view. X 4. 



C. Oral view of piece of arm. X 4. 



7. Side view of piece of arm. X 10. 



Amphiodia planispina (von Martens). Rio Janeiro, Brazil. 



8. Aboral view. X 5. 



9. Oral view. 



Amphioplus congensis (Studer). Off the mouth of the Congo. 



10. Aboral view. X 5. 



11. Oral view. 



12. Side view of six arm-segments. X 10. 



