PLATE VII. 
Colella pedunculata, Quoy and Gaimard. 
Fig. 1. Section through the test, mantle, and endostyle of an Ascidiozooid ; highly 
magnified (S., ^ inch). 
Fig. 2. The anterior end of an Ascidiozooid, seen from the branchial sac ; highly 
magnified (S., ^ inch). 
Fig. 3. One of the dorsal languets, seen from the side ; highly magnified (S., ^ inch). 
Fig. 4. Part of one of the tentacles ; more highly magnified (S., ^ inch). 
Fig. 5. The nerve ganglion ; highly magnified (S., ^ inch). 
Fig. 6. The anterior dorsal region of an Ascidiozooid, showing the dorsal tubercle, 
tentacles, &c. ; highly magnified (S., ^ inch). 
Fig. 7. Part of an Ascidiozooid from the right hand side, showing the reproductive 
organs and incubatory pouch; magnified (S., 1 inch). 
Fig. 8. Part of the intestine and the ovary ; magnified (S., 1 inch). 
Fig. 9. Part of the reproductive organs ; highly magnified (S., ^ inch). 
Fig. 10. Young ova; highly magnified (S., ^ inch). 
Fig. 11. Mature ovum; highly magnified (S., ^ inch). 
Fig. 12. Young incubatory pouch with two embryos ; magnified (S., 1 inch). 
Fig. 13. Older incubatory pouch with a number of embryos and larvae; magnified 
(S., 1 inch). 
Fig. 14. Fully developed incubatory pouch, with contained embryos and larvae; 
magnified (S., 1 inch). 
