PLATE 7. 



Amphiodia gyraspis H. L. Clark. Mayaguez, Porto Rico. 



Fig. 1. Aboral view without disk. X 2.5. 



2. Aboral view of disk. X 5. 



3. Oral view without disk. X 2.5. 



4. Side view of eight arm-segments. X 10. 



Amphioplus pabviclypeus H. L. Clark. Badu Island, Torres Strait. 



5. Aboral view of disk. X 4. 



6. Aboral view of mouth-frame and arm. 



7. Oral view of disk-cap. 



8. Oral view of mouth-frame and arm. 



Amphioplus astekictus H. L. Clark. Tokyo Bay, Japan. 



9. Aboral view. X 3.5. 



10. Oral view. 



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



Amphioplus lobatodes H. L. Clark. Sagami Bay, Japan. 



12. Aboral view. X 3. 



13. Oral view. 



Amphioplus cyrtacanthus H. L. Clark. Philippine Islands. 



14. Aboral view without disk. X 3. 



15. Oral view without disk. 



