PLATE 17. 



Amphiophiura metabttla H. L. Clark. North of Cuba, 292 fms. 



Fig. 1. Aboral view. X 4. 



2. Oral view. 



3. Side view of four arm-segments. X 10. 



Pectinura cylindrica (Hutton). Dunedin, N. Z. 



4. Aboral view. X 4. 



5. Side view of five arm-segments. X 10. 



Cryptopelta granulifera H. L. Clark. Mauritius. 



6. Aboral view. X 4. 



7. Oral view. 



Ophiocryptus maculosus H. L. Clark. Laguna Beach, Cal. 



8. Aboral view. X 8. 



9. Oral view. 



Amphiophiura oedignatha H. L. Clark. Off St. Kitts, B. W. I., 208 fms. 



10. Aboral view. X 4. 



11. Oral view. 



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



