438 PERCY SLADBN TRUST EXPEDITION. 



EXPLANATION OF PLATE 25. 



Fig. 1. Thordisa crosslandii : dorsal view, natural size. 



rig. 2. „ „ portion of back, enlarged, showing projections. 



Fig. 3. Ceratophyllidia grisea : dorsal view. 



Fig. 4. „ „ lateral view. 



Fig. 5. „ „ section showing attachment of globules. 



Fig. 6. ,, „ side view of a globule, enlarged. 



Fig. 7. „ „ plan of same, also enlarged. 



Fig. 8. Phyllidiopsis carinata, sp. nov. : top view. 



Fig. 9. ,, ,, black spot showing projection, enlarged. 



Fig. 10. Miamira magnifica : top view. 



Fig. 11. „ „ perspective view. 



Fig. 12. Phyllidiopsis carinata : side view. 



Fig. 13. Pteraeolidia annulata : one of the teeth. 



