EET RR 
209 
Explanation of Plate II. 
All the figures are of Microphiura decipiens. 
Fig. & Ventral side of a specimen with the disk cast off. 25/4. 
— 2.—4. AÅ cast-off disk seen from the ventral side (Fig. 2), in side 
view (Fig. 3) and from the dorsal side (Fi 4) | 
Fig. 5. Dorsal side of a specimen with the disk cast off. 25/3. 
— 6.—7. Vertebræ in dorsal (Fig. 6) and ventral (Fig 7) aspect. In 
Fig. 6 the coalescense of the ambulacrals has begun. The figures 
are 80 placed as to turn the distal end of the vertebræ upwards. 15/,. 
— 8.—9. Articular surfaces of a vertebra. Fig. 8 represents the proximal, 
fig. 9 the distal surface. The figures are so placed as to turn the 
dorsal side of the vertebra upwards. 15/3, 
10. Inner pore and tentacle scale. 15/1, 
1.—12.—1910. 
