144 BULLETIN 84, UNITED STATES NATIONAL MUSEUM. 



Plate 6. 



Fig. 1. Amphiodia liilkeni, upper iace. X7. 



2. Amphiodia lillkeni, xiniler ia.ce. X7. 



3. Amphiodia riisei, under i&ce. X7. 



4. AmpModia ertela, upper iaceoi smaller eperimeTi. XH. 



5. Amphiodia erectn, under fare of the same. X 11. 



6. Amphiodia erceta, upper face of the hirger sisecimen. X6. 



7. Amphiodia erecta, under face of tlie same. X6. 



Pl.\te 7. 



Fig. 1. Amphiura stimpsoni, upper iace. Xll. 



2. Amphiurasiimpsoni, under face. X14. 



3. Amphiurajibulata, upper iace. X5. 



4. Amphiurafibulata, under iace. X7. 



5. Amphiura fihulata, upper face of the disk of the eame specimeu, more enlarged. X7. 



6. Amphiura diducta, upper iace. X8. 



7. ^mpAtVra rf?d«cte, under face. X8. 



Plate 8. 



Fig. 1. Ophiophragmus ■mindermani, upper iace. X4. 



2. Ophiophragmus uimdermani, under face. X4. 



3. Ophiacaniha hidcnhita, under face. X4. 



4. Ophiacaniha bidentata, under face. X4. 



5. Amphiura otkri, upper face of one of Ljungman's types. X4. 



6. Amphiura otteri, under face of the same. X4. 



7. Amphiura otteri, under face of a specimen from the Albatross. X5. 



8. Amphiura otteri, under face of an arm of one of Ljungman's types. X5. 



9. Amphiura otteri, upper face of the same arm. X5. 



Plate 0. 



Fig. 1. Ophiacantha mcridionali^i, upper iace. X6. 



2. Ophiacanthamcridionalis, under iace. X6- 



3. Ophiacaniha pentacrinus, upper face. XIO. 



4. Ophiacaniha pentacrinus, under face. XIO. 



5. Ophiacaniha sp., allied to 0. pentacrinus; upper face. XIO. 



6. Ophiacaniha sp., allied to 0. pentacrinus; under face of the same specimen. XIO. 



Plate 10. 



Fig.]. Ophiomilrellaleris, under iace. XlO. 



2. Ophiacaniha granulifera, upper face. X4. 



3. Ophiacaniha granuli/era, under iace. X5. i 



4. Ophiomitra robusta, upper face. X4. 



5. Ophiomitra robtista, under face. X4. 



6. OphiomilrcUalevis, upper iace. XIO. 



Plate 11. 



Fig. 1. Ophiacaniha acitlcata, upper iace. X4. 



2. Ophiacaniha aculeata, i\nder iace. X4. 



3. Ophiacaniha (Ophioprislis) permixta, upper face. X4. 



4. Ophiacaniha (Ophioprislis) permixta, under face. X4.5. 



5. Ophiacaniha fralcrna , upper face. X4. 



6. Ophiacanlhafratcrna, under face. X4. 



