EXPLANATION OF PLATES. 

 Plate 1. 



Fig. 1 . Ophiorlrrma elaps, side view of an arm. X3. 



2. Ophioderma elaps, portion of the upper face of the disk and of an arm. X3. 



3. Ophioghjphaiirorata, under (ace. X2. 



4. Ophioglyphairrorata, nyipcT iace. X2. 



5. Ophioghjpha sarsii, young, upper face. X9. 



6. Ophioglypha sarsii, young, upper face. X5. 



7. Ophiomnsiumrugosiim, upper iace. X4. 



8. 0/)/ii'omim!(Hi ru^osuin, under face. X4. 



9. Ophiomusium sculptum, upper iace. X6. 



Plate 2. 



Fig. 1. Optorferma sp., young; upper face. X4. 



2. Opftioderma sp., young; under face. X4. 



3. Ophioglypha coronata, upper iace. X4. 



4. Ophioglypha coronata, under face. X4. 



5. Op^!0(7?i/p/ia coni'fxa, under face. X4. 



6. Ophioglypha convexa, upper face. X4. 



Plate 3. 



Fig. 1. Ophiomusiumamigenim, upper isLce. X5- 



2. Ophioglypha lepida, upper face. X3. 



3. OpTiiommA'uni ipfaosiim, upper face. X7. 



4. OpftiomisWiwm spcciosum, under face. X7. 



5. Ophioglypha elerata, under face. X6. 



6. Op/(iom»/0(S 7jw>a6i7is, under face. XG. 



7. Op/iiomusiMni totudo, upper face. X7. 



Plate 4. 

 Fig. 1. ^7Jipft!Mra_/?fr!(osa, upper face. X6. 



2. .4?npA!'!(ra/fJ!(osa, under face. X6. 



3. Amphiura kinbergiensis, under face of a specimen from the Albatross. X8. 



4. Amphiura kinbergimsis, under face of a specimen from the Travailleur and the Talisman. X8. 



5. Amphiura lalispina, under face. X7. 



6. Amphiura latispina, upper face. X7. 



Plate 5. 



Fig. 1. Amphiura kinbergiensis, upper face of a specimen from the Albatross. X8. 



2. Amphiura kinbergiensis, upper face of a specimen from the Travailleur and the Talisman. X8. 



3. Amphiura complanata, upper face. X4. 



4. Amphiura complanata, under face of another specimen. X5. 



5. Amphiura complanata, upper face of the specimen illustrated in fig. 4. X5. 



6. Amphiura complanata, under face of the specimen illustrated in fig. 3. X4. 



7. Ophiocni'la lovcni, upper face. X". 



8. Ophiocnida loveni, under face. X~. 



143 



