Clark. — Brittle-Stars. 



PLATE 7. 



Amphioplus thrombodes H. L. Clark. Holotype. Key West. 



Fig. 1. Aboral view. Nat. size. 



Fig. 2. Aboral view of disk and bases of arms. X 3. 



Amphioplus coniorlodes H. L. Clark. Holotype. Key West. 



Fig. 3. Aboral view. Nat. size. 



Fig. 4. Aboral view of disk and bases of arms. X 3. 



Ophiacantha oligacantht H. L. Clark. Holotype. Tortugas. 

 Fig. 5. Aboral view. X 3. 



