PLATE IV. 
Fig. 1. Cucumaria serrata, n. sp. a, plates from the body-wall itself; h, plates from 
the tentacles. 
Fig. 2. Cucumaria serrata, var. intermedia, nov. (Station 150). a, plates from the 
body- wall itself ; h, plates from the pedicels. 
Fig. 3. Cucumaria serrata, var. marionensis, nov. Plates. 
Fig. 4. Cucumaria multipes, n. sp. Different views of tables. 
Fig. 5. Cucumaria insolens, n. sp. a, calcareous ring ; h, large, elongate, knobbed plates 
or buttons, with one end prolonged and spinous ; c, side view of the same 
plates ; d, rounded buttons ; e, transitional form between these two kinds of 
deposits ; f, small cruciform bodies ; g, supporting rods of the pedicels. 
Fig. 6. Cucumaria abyssorum, n. sp. a, calcareous ring ; 6, different kinds of four- 
armed spicules from the body- wall itself ; c, spicules from the pedicels. 
Fig. 7. Cucumaria abyssorum, var. liyalina, nov. A four-armed spicule from the body- 
wall. 
Fig. 8. Cucumaria discolor, n. sp. a, plates or cups from the exterior layer of the peri- 
some ; b, different kinds of knobbed buttons ; c. scales ; d, supporting plates 
from the ambulacral appendages. 
Fig. 9. Colochirus pygmseus, n. sp. a, perforated plates from the body- wall itself; 
b, buttons ; c, cups from the exterior layer of the perisome ; d, side view of a 
cup, with the spinous, outwardly-directed rim turned downwards ; e, support- 
ing rods from the ambulacral appendages. 
