Van Name. — Simple Ascidiaas 
PLATE 47. 
Fig. 21. Caesira pannosa (Verrillj. Large tentacle from a large specimen, 
X28. 
Fig. 22. Caesira pannosa (Verrill). Part of branchial sac. X 21. 
Figs. 23 and 24. Caesira pannosa (Verrill). Dorsal tubercles of two in- 
dividuals. X 21. 
