462 BULLETIN 100, UNITED STATES NATIONAL MUSEUM. 



PLATE 43. 



PIG. 1. Ophiogymna pellicula from the Am Islands ; dorsal surface. 

 2. The same; ventral surface. 



3. Ophiogymna elegans from station 5151 ; dorsal surface of a very young 

 specimen. 



4. A specimen from station 5253 ; dorsal surface. 



5. A specimen from station 5151 ; dorsal surface. 



6. A specimen from station 5154 ; portion of the dorsal surface of an arm 



near its origin. 



7. A specimen from station 5165 ; portion of the dorsal surface of an arm 

 near its tip. 



8. A specimen from station 5151 ; ventral surface. 



9. Ophiogymna fulgens from station 5151 ; portion of the dorsal surface of 



an arm of which the dorsal plates are much fragmented. 



10. A specimen from station 5545 ; dorsal surface of an arm. 



11. Ophiogymna pulchella from station 5133 ; dorsal surface. 



PIATE 44. 



FIG. 1. Ophiogymna funesta from station 5213; ventral surface. 



2. The same; dorsal surface of an entire specimen. 



3. The same ; dorsal surface, more magnified. 



4 and 5. The same ; dorsal surfaces of two arms from two different speci- 

 mens. 



6. The same; dorsal surface of the disk of a specimen without arm 



spines. 



7. The same ; dorsal surface of the disk of a specimen furnished with large 



arm spines. 



8. Ophiogymna fulgens from station 5545; dorsal surface of an entire 



specimen. Reduced. 



PLATE 45. 



Ophiothrix koreana. 



FIG. 1. A specimen from station 5179; dorsal surface. 



2. A specimen from station 5116 ; dorsal surface. 



3. The same ; ventral surface. 



4. A specimen from station 5373 ; dorsal surface. 



5. A specimen from station 5187 ; dorsal surface. 



6. A specimen from station 4893 ; dorsal surface. 



PLATE 46. 



FIG. 1. Ophiothrix trilineata from Mauritius; ventral surface. 



2. The same; dorsal surface. 



3. The same ; dorsal surface, more magnified. 



4. Ophiothrix Jiybrida from station 5321; dorsal surface of tlie entire 



specimen. Reduced. 



5. The same ; dorsal surface, more magnified. 



6. The same ; ventral surface. 



PLATE 47. 



FIG. 1. Ophiothrix bellax; dorsal surface of the entire individual. 



2. The same ; dorsal surface, more magnified. 



3. The same; ventral surface. 



