PLATE VIII. 
Colella pedunculata, Quoy and Gaimard. 
M. Bladder cell. I o.s. Outer surface of the test. | v.ap. Vascular appendage. 
cmh. A bud. 1 t.m. Test matrix. \ 
Fig. 1. Part of the peduncle ; slightly enlarged. 
Fig. 2. Transverse sections near the lower end of the peduncle ; natural size. 
Fig. 3. Transverse sections from the middle of the peduncle ; natural size. 
Fig. 4. Transverse sections from another peduncle ; natural size. 
Fig. 5. Transverse sections from the upper end of the peduncle ; natural size. 
Fig. 6. A transverse section from the lower end of the peduncle (fig. 2), showing a 
young bud; magnified (S., 1 inch). 
Fig. 7. A transverse section from further up the peduncle (fig. 3), showing several 
buds ; magnified (S., 1 inch). 
Fig. 8. Part of a transverse section through the upper end of a peduncle, showing a 
number of buds ; highly magnified (S., ^ inch). 
Fig. 9. Part of a longitudinal section through the peduncle, showing the vascular 
appendages and buds ; highly magnified (S., ^ inch). 
Fig. 10. Part of a transverse section through the upper end of the peduncle, showing the 
vascular appendages; magnified (S., 1 inch). 
Fig. 11. Part of a transverse section through the base of the head, showing the vascular 
appendages and their canals ; magnified (S., 1 inch). 
Fig. 12. Part of a transverse section of the peduncle, showing a vascular appendage 
imbedded in the test ; highly magnified (S., ^ inch). 
Fig. 13. The ectoderm covering a vascular appendage ; highly magnified (S., inch). 
