PLATE XIX. 



THE MOUTH AND ORAL LAMINA. 



FIG. 



1. Ascidia rubicunda Hanc. (p. 84) 



2. A. rubrotincta Hanc. (p. 87) 



3. A. crassa Hanc. (p. 90) 



4. A. mollis A. & H. (p. 93) 



5. A. plana Hanc. (p. 96) 



6. A. Alderi Hanc. (p. 99) 



7. A. producta Hanc. (p. 106) 



8. A. depressa A. & H. (p. 112) 



9. A. aculeata Alder (p. 115) 



10. A . scabra Mull. (p. 130) 



11. A. Normani A. & H. (p. 134) 



12. A. affinis A. & H. (p. 137) 



All the figures much enlarged, but considerably reduced 

 from Mr. Hancock's drawings. 



