Van Name. — Simple Ascidlans. 
PLATE 66. 
Fig. 128. Phallusia obliqua (Alder). Part of branchial sac. X 29. 
Fig. 129. Phallusia prunum (Miiller). Part of branchial sac. X 29. 
Fig. 130. Ciona intestinalis (Linnaeus). Part of branchial sac from speci- 
men from Newport, R. I. X 36. 
Fig. 131. Phallusia obliqua (Alder). Dorsal tubercle. X 11. 
Fig. 132. Phallusia prunum (MuWer). Dorsal tubercle. X 11. 
