PLATE XL. 



FIG. 



1. Branchial tentacle of Molgula siphonata Alder, (p. 55) 



2. Fibrils of the same species, one with a particle of sand 



attached, (p. 55) 



3. Fibrils of another species of Molgula, possibly M. valvata 



sp. nov. (see p. 51) 



4. Branchial tentacle of Molgula citrina A. & H. (p. 63) 



5. Fibrils of Eugyra arenosa A. & H. (p. 70) 



6. Branchial tentacle of Cynthia claudicans Sav. (p. 80) 



7. Pinnate branchial tentacle of Cynthia squatmilosa Alder. 



(p. 83) (A bi-pinnate tentacle is represented by 

 fig. 33 in the text.) 



8. Oral lamina, consisting of tentacular processes ; and 



branchial tubercle ; of Cynthia morus Forbes, (p. 88) 



9. Fibrils of Styela fibrillata sp. nov. (p. 125) 



The organs are described on the pages refeiTed to. The 

 figures are magnified in various proportions. 



