OPHIUBANS OF THE PHILIPPINE AND ADJACENT WATERS. 455 



Fig. 9. The same ; dorsal surface of the entire specimen. Reduced. 



10. The same ; ventral surface. 



11. The same ; dorsal surface of an arm near the tip. 



Plate 8. 



Fig. 1. Ophientrema leucostictum from station 5606; dorsal surface of the en- 

 tire specimen. Reduced. 



2. The same ; dorsal surface of the disk more magnified. 



3. The same; ventral surface of an arm. 



4. The same ; ventral surface of the disk. 



5. Ophiotreta eximia from station 5648; ventral surface. 



6. The same; dorsal surface. 



Plate 9. 



Fig. 1. Ophiophthalmws relictus from station 5648 ; dorsal surface. 



2. The same ; lateral view of the disk. 



3. The same ; lateral view of an arm. 



4. The same ; ventral surface. 



5. Ophiophthalmus normani; ventral surface 



6. The same ; dorsal surface. 



7. Ophiolimna perfida from station 5619; dorsal surface. 



8. The same; ventral surface. 



9. The same; lateral view on an arm. 



Plate 10. 



Fig. 1. Ophiomitra dives from station 5543 ; dorsal surface of the entire speci- 

 men. Reduced. 



2. The same ; dorsal surface, more magnified. 



3. The same ; ventral surface of an arm. 



4. The same ; ventral surface of the disk. 



5. Ophientrema leucostictum; lateral view of an arm with the arm spines 



removed. 



Plate 11. 



Ophiotreta gratiosa. 



Fig. 1. A specimen from station 5410 ; dorsal surface. 



2. A specimen from station 5529 ; dorsal surface. 



3. A specimen from station 5622 ; ventral surface. 



4. A specimen from station 5402 ; ventral surface. 



5. A specimen from station 5623 ; ventral surface 



6. A specimen from station 5626 ; dorsal surface. 



7. A specimen from station '5300; ventral surface. 



Plate 12. 

 Ophiotreta matura. 



Fig. 1. A specimen from station 5424 ; dorsal surface. 



2. The same; ventral surface. 



3. A specimen from station 5538 ; ventral surface. 



4. A specimen from station 5424 ; dorsal surface of an arm. 



5. A specimen from station 5425 ; dorsal surface of an arm. 



6. A specimen from station 5359 ; dorsal surface. 



